View
2.525
Download
2
Category
Tags:
Preview:
DESCRIPTION
Presented by Patricia Harpring at the Annual Conference of the Visual Resources Association, March 12-15, 2014 in Milwaukee, Wisconsin. Session 11, Brave New World Cataloging: Using RDF and Linked Open Data for the Semantic Web ORGANIZER: Sheryl Frisch, California Polytechnic State University MODERATOR: Trish Rose-Sandler, Center for Biodiversity Informatics, Missouri Botanical Garden PRESENTERS: • Trish Rose-Sandler, Center for Biodiversity Informatics, Missouri Botanical Garden • Jeffrey Mixter, Kent State University Research Support • Georgina Goodlander, Smithsonian American Art Museum • Patricia Harpring, Getty Vocabulary Program, Getty Research Institute RDF (Resource Description Format) and LOD (Linked Open Data) are two key components in the ongoing development of the Semantic Web (the structured linking of web-based information to enable users anywhere to find, share, and combine information more easily). Although we are used to working in information silos much of the time, the Semantic Web can allow data to be discovered, shared and reused across application, enterprise, and community boundaries. The speakers will demonstrate how our existing data (from both VR collections and museums) can be transformed to the RDF format; how the effort can be shared in a community; and how LOD will affect and expand the tools we use daily to provide controlled vocabulary terms.
Citation preview
Patricia Harpring Managing EditorPatricia Harpring, Managing EditorGetty Vocabulary Program
15 March 2014Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Linked Data Linked Data› A set of best practices for publishing and connecting structured data on
the Web to enable the interlinking possibilities.› It builds upon standard Web technologies such as HTTP and URIs.› But, rather than using them to serve web pages for human readers, it
extends them to share information in a way that can be read automatically by computers.
Open data Open data › The idea that certain data should be freely available to everyone to use
and republish as they wish, without restrictions from copyright, patents or other mechanisms of control.
Linked Open Data (LOD)› A community project, sponsored by the Semantic Web Education and
Outreach group of the W3C, to extend the Web with a data commons by publishing various open datasets as RDF on the WEB and by setting y p g p y gRDF links between data items from different data sources.
› Both linked and open.Patricia Harpring , thanks to Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Li k d D t th W b Linked Documents on the Web› Connected by hypertext› Allows users to traverse via Web browsers› Data is made available in formats such as CSV XML or › Data is made available in formats such as CSV, XML, or
marked up as HTML tables Linked Data on the Web
› Connects data from diverse domains such as people › Connects data from diverse domains such as people, books, scientific publications, films, genes, drugs and clinical trials, online communities, statistical and scientific data.
› Enables new generation of search engines that follow the › Enables new generation of search engines that follow the links between data sources to deliver more complete answers as new data sources appear
› Operate on top of an unbound, global data space.› Uses the Web to create typed links between data from
different sources.Patricia Harpring , thanks to Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Semantic Web Linked Open Data (LOD) Resource Description Framework (RDF) LOD Ontologies & Vocabularies Uniform Resource Identifier (URI) Web Ontology Language (OWL) Simple Knowledge Organization System (SKOS) Triples and Triplestores Triples and Triplestores SPARQL Protocol RDF Query Language (SPARQL) Inference Inference Open World Assumption
Patricia Harpring , thanks to Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
The process of deriving new information from the information l d hyou already have
› Simple and deterministic: If I know a rock weighs 1 kg. I can infer that the same rock weighs 2.2 lbs.
› Rule-based: If I know a person is under 16 and in California, I can infer that they are not allowed to drivethat they are not allowed to drive.
› Classification: If I know a company is in San Francisco or Seattle, I can classify it as a “west coast company.”
› Judgments: If I know a person’s height is 6 feet or more, I refer to them as tall.
› Online services: If I know a restaurant’s address, I can use a geocoder to find its coordinates on a map.
In the semantic web application, this often means creating new triples, based on logic applied to existing ones.
Monotonic Inference – if a statement is inferred from a set of axioms, adding an additional axiom cannot remove that inferred statement. To invalidate the inference would require at least one of the original axioms to be removed.
Patricia Harpring , thanks to Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
AAT, the Art & Architecture Thesaurus®Generic terms for describing art, architecture, other material culture (e.g., oil paintings, Baroque, lithographers). Current totals: 5,500 records; 306,000 terms
• Getty Vocabularies are thesauri compliant with national (NISO) and international (ISO) standards for thesaurus construction
• Grow through contributions from the expert user community• Contributors and sources are cited
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
AAT, the Art & Architecture Thesaurus®Generic terms for describing art, architecture, other material culture (e.g., oil paintings, Baroque, lithographers). Current totals: 5,500 records; 306,000 terms
TGN, the Getty Thesaurus of yGeographic Names®Names, other information for current, historical administrative places and physical features (e.g., Firenze, Roman Empire, Ganges River) Current totals: 1 431 600; 2 038 000 namesGanges River). Current totals: 1,431,600; 2,038,000 names
• Getty Vocabularies are thesauri compliant with national (NISO) and international (ISO) standards for thesaurus construction
• Grow through contributions from the expert user community• Contributors and sources are cited
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
AAT, the Art & Architecture Thesaurus®Generic terms for describing art, architecture, other material culture (e.g., oil paintings, Baroque, lithographers). Current totals: 5,500 records; 306,000 terms
TGN, the Getty Thesaurus of yGeographic Names®Names, other information for current, historical administrative places and physical features (e.g., Firenze, Roman Empire, Ganges River) Current totals: 1 431 600; 2 038 000 namesGanges River). Current totals: 1,431,600; 2,038,000 names
ULAN, the Union List of Artist Names®Names, other information for artists, other people, corporate , , p p , pbodies related to art (e.g., Bartolo di Fredi, National Palace Museum). Current totals: 248,600 records; 642,900 names
• Getty Vocabularies are thesauri compliant with national (NISO) and international (ISO) standards for thesaurus construction
• Grow through contributions from the expert user community• Contributors and sources are cited
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
AAT, the Art & Architecture Thesaurus®Generic terms for describing art, architecture, other material culture (e.g., oil paintings, Baroque, lithographers,sintering). Current totals: 5,500 records; 306,000 terms
TGN, the Getty Thesaurus of yGeographic Names®Names, other information for current, historical administrative places and physical features (e.g., Firenze, Roman Empire, Ganges River) Current totals: 1 431 600; 2 038 000 namesGanges River). Current totals: 1,431,600; 2,038,000 names
ULAN, the Union List of Artist Names®Names, other information for artists, other people, corporate , , p p , pbodies related to art (e.g., Bartolo di Fredi, National Palace Museum). Current totals: 248,600 records; 642,900 names
CONA the Cultural Objects NameCONA, the Cultural Objects Name Authority®
Now accepting contributions. Includes titles, other information for moveable works and architecture (e ginformation for moveable works and architecture (e.g., Hagia Sophia, Mona Lisa, Fantastic Landscape with a Pavilion). Current totals: 5,500 records; 9,300 titles/names
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Vocabularies contain critical features that
subject_id=500013247
features that them adaptable to linking:
Each vocabulary term_id=1500207490
Each vocabulary record is identified by a unique, persistent
i IDnumeric ID
Terms and controlled lists also each have
nat_code=905040
role id=31261also each have unique numeric IDs
role_id=31261
TGN subject id=7006827TGN subject_id 7006827
subject_id=500115332Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trustrel_type_code=1553
Relationships in the vocabularies are also relevant in linking
Th l l ti hi ( l f ULAN) Thesaural relationships (examples from ULAN)› Equivalence
Sèvres Porcelain Manufactory synonym for èManufacture nationale de Sèvres
› Hierarchical Sèvres Porcelain Manufactory is broader context for
l i h dEloy Brichard company› Associative
Sèvres Porcelain Manufactory was directed by R b t L i Ré 1832 1879 Robert, Louis-Rémy 1832-1879
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Relationships beyond thesaural:
ULAN
› Conceptually linked prior to LOD› CONA has actual links
TGNTGNCONA Records
Source Records
AAT
IconographyAuthority
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
AAT, TGN, and ULAN have traditionally been licensed and released in various formats
Release formats
Online search form getty.edu/research/tools/vocabularies/index.html
Raw data files may be licensed from the Getty in Raw data files may be licensed from the Getty in relational tables and XML format and through Web services APIs
[I dditi t LOD l t ti idi [In addition to LOD, we plan to continue providing the data in relational tables and XML releases. If any format is discontinued in the future, users will be given advance notice]g ]
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
A current trend in managing art information is to increasingly make data about art, architecture, and cultural heritage objects available as Linked and cultural heritage objects available as Linked Open Data
This applies to the information directly describing the objects, but also the vocabularies used in the the objects, but also the vocabularies used in the descriptions
For years now, the Getty Vocabulary team has been receiving requests to publish our thesauri as been receiving requests to publish our thesauri as LOD; licensees were beginning to experiment on their own
It is time to stop asking “why” and to start It is time to stop asking why and to start exploring “how”
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Institutional buy-in, particularly as LOD project coincides with the Getty’s Open Content initiative› The J. Paul Getty Museum and Getty Research
Institute make available, without charge, all available digital images to which the Getty holds the rights or that are in the public domain to be used for any purpose. No permission is required
› www.getty.edu/about/opencontent.html Also, GRI Portal: The Getty Research Portal™ is an
online search platform providing global access to o e sea c p a o p o d g g oba access o growing number of digitized art history texts
(Neither one as yet has LOD metadata)Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Linked Open Data
BatchOnline Forms
Contributions from AAT, TGN, ULAN
Bi-weekly exports to the public web sitesBatch sites
Contribution Validation Application
(CVA)
Contribution Validation Application
(CVA)
Editorial System (VCS)Editorial System (VCS)
Web Service APIs(CVA)(CVA)
Contributions from CONA
i d
Yearly UTF-8 release
BatchLicensed
Data Admin ApplicationXML & REL
Patricia Harpring , from Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
We plan to publish all four Getty vocabularies to the LOD cloud
The AAT was published to the LOD cloud in February 2014www.getty.edu/research/tools/vocabularies/lod/index.html› Plan to refresh the data every two weeksy
SPARQL endpoint: http://vocab.getty.edu/
Our base URI is http://vocab getty edu/ Our base URI is http://vocab.getty.edu/ e.g., http://vocab.getty.edu/aat/300311452
Under the ODC-BY 1 0 license Under the ODC BY 1.0 license
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Open Data Commons Attribution License (ODC-By) v1.0
Allows that you (the users) are free to do the following:
To Share: To copy, distribute, and use the database To Create: To produce works from the database To Adapt: To modify transform and build upon the database To Adapt: To modify, transform, and build upon the database
As long as you Attribute: You must attribute any public use of the database, or works produced from the database, in the manner
ifi d i th li specified in the license › For any use or redistribution of the database, or works produced from it,
you must make clear to others the license of the database and keep intact any notices on the original database
http://opendatacommons.org/licenses/
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Plans are in place to release the other vocabularies as LOD, target dates: TGN in July 2014 ULAN in January 2015 (various ontologies)TGN in July 2014, ULAN in January 2015 (various ontologies)and CONA in July 2015 (are investigating CIDOC CRM)
Sequence was chosen to take advantage of the way the vocabularies are connected: AAT is linked to itself; TGN pulls from AAT; ULAN from AAT and TGN; and CONA links to others
Also publishing LOD versions of lookup lists (e.g., languages, p g p ( g , g g ,bibliographic sources)
Subsequent phases will focus on how we use the data (e.g., using it on our own Web sites collaboration with external sites
Patricia Harpring , thanks to Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
using it on our own Web sites, collaboration with external sites, harvesting, visualization, etc.)
The majority of the work will be done by our in-house team, but we have established an open community and welcome collaboration: vocabLOD@getty.educollaboration: vocabLOD@getty.edu
The teamGetty ITS Outside consultant, OntotextJoan Cobb Vladimir AlexievJoan Cobb Vladimir AlexievGregg Garcia
Getty Vocabulary Program (GRI)Patricia Harpring Jon Ward Antonio Beecroft Robin JohnsonPatricia Harpring, Jon Ward, Antonio Beecroft, Robin Johnson
ITS and GRI joint LOD steering committeeMurtha Baca, David Farneth, Joe Shubitowski, Mike Clardy, Marilyn Gillette, Joan Cobb, Gregg Garcia, Patricia Harpringgg p g
External Advisors (see list on our LOD page)
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
http://www.getty.edu/research/tools/vocabularies/lod/index.html
Visit this page for updates on status
www.getty.edu/research/tools/vocabularies/ write to us: vocabLOD@getty.edu
Enables programmers and developers to query knowledge base via SPARQL language. Results are returned in machine-processable formats
SPARQL endpointSPARQL endpoint
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
The Ontologies used to express the AAT Where ever possible, we map AAT data elements to the
following external standards › SKOS, SKOSXL, ISO 25964 for representing the thesaurus information
DC DCT f ti› DC, DCT for common properties› BIBO, FOAF for sources and contributors› RDF, RDFS, OWL, XSD for system properties› R2RML for implementing the conversion of data from Oracle to Ntriples› R2RML for implementing the conversion of data from Oracle to Ntriples
GVP (Getty Vocabulary Program) ontology includes various classes, properties and individuals (values) used in the mapping that add further detail. Some examples:p› Broader Transitive › Term Characteristics › Sort Order
Patricia Harpring, thanks to Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
› Historic Information› Associative Relationships
The Ontologies used to express the AAT Where ever possible, we map AAT data elements to the
following external standards › SKOS, SKOSXL, ISO 25964 for representing the thesaurus information
DC DCT f ti› DC, DCT for common properties› BIBO, FOAF for sources and contributors› RDF, RDFS, OWL, XSD for system properties› R2RML for implementing the conversion of data from Oracle to Ntriples
• RDF – defines structure and allows for the exportation of content in triples› R2RML for implementing the conversion of data from Oracle to Ntriples
GVP (Getty Vocabulary Program) ontology includes various classes, properties and individuals (values) used in the mapping that add further detail Some examples:
exportation of content in triples• RDFSchema – RDFs defines classes that are used in
the representation of object, predicates, subjects• Ontology – formal specifications that adds
further detail. Some examples:› Broader Transitive › Term Characteristics › Sort Order
semantics to the schema • SKOS, SKOS-XL, DCTerms, ISO 25964, PROV, BIBO,
FOAF are all ontologies that extend the basic RDF
› Historic Information› Associative Relationships
Patricia Harpring, thanks to Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
We provide export files (data dumps) in several configurations and formats. Instructions are included online
Explicit exports p p› These are statements in NTriples format, generated directly from
the Getty Vocabulary Program’s database using R2RML Per-Entity Exportsy p
› These are downloadable semantic representation for a particular entity in RDF/XML, Turtle, NTripples, and JSON formats
Total Exports› Includes all statements (explicit and inferred) of all independent
entities in NTriples format
Patricia Harpring . thanks to Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
For technical details, see documentation online Or write to vocabLOD@getty edu Or write to vocabLOD@getty.edu
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Editorial work to prepare for LOD required making links and mapping between vocabularies; from conceptual to actual linksE l i ULAN d l t i TGN t t AAT t E.g., roles in ULAN and place types in TGN must map to AAT terms
CONA
AAT
TGN
ULAN
TGN
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
• Nationality/ Culture/ Race/ Ethnicity in
Many links cannot be made automaticallyRace/ Ethnicity in ULAN should be linked to AAT
• Nat list was never actually linked to
Matching ULAN Nat. to AATactually linked to AAT
• Project to match encounters issues e g no match Thi e.g., no match, ambiguous match
• Must be resolved by hand
This “hessian” is bad match, =
no matchmatch, type of burlap
false match
ambiguous matchPatricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Since CONA is linked to the other vocabularies, it is necessary to match incoming values to the AAT, ULAN, TGN, and CONA Iconography Authority when loadedCONA Iconography Authority when loaded
The CVA/Processor was developed for editors to use if auto-links are not possible
Contribution Validation Application software Contribution Validation Application, software architect Gregg Garcia
CONA record, creatorCONA record, creator
Koenig, Pierre (American architect, 1925-2004) 500086520link to ULANPatricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
How to avoid errors in linking Which Jan Smit?
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
<aat:300198841> <skos:prefLabel> "rhyta"@en
Triplesp y
<aat:300198841> <skos:altLabel> "ritons"@fr<aat:300198841> <rdf:type> <gvp:Concept><aat:300198841> <gvp:broaderPreferred> <aat:300194567><aat:300198841> <gvp:aat2100 distinguished from> <aat:300197140><aat:300198841> <gvp:aat2100_distinguished_from> <aat:300197140>
subject predicate objectrhyta – [are] distinguished from – stirrup cups
W3C standards (RDF) to describe the data in triples Three column format – known as a triple – forms the
rhyta [are] distinguished from stirrup cups
pfundamental building block of semantic representations.
Subject - corresponds to the entity – a ‘thing’ Predicates – property of the entity - names, birth/death
datesdates Objects - Subjects in another triple OR Literal values
Patricia Harpring . thanks to Joan Cobb, Gregg Garcia March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
<aat:300198841> <skos:prefLabel> "rhyta"@enp y<aat:300198841> <skos:altLabel> "ritons"@fr<aat:300198841> <rdf:type> <gvp:Concept><aat:300198841> <gvp:broaderPreferred> <aat:300194567><aat:300198841> <gvp:aat2100 distinguished from> <aat:300197140><aat:300198841> <gvp:aat2100_distinguished_from> <aat:300197140>
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Challenges
Where our data didn’t fit into standards, we needed technical solutions in order to retain critical features that make our thesauri unique
Multilingual data: we already have terms in over 110 different languages and the potential is for thousands of languages (current, historical, dialects, etc.)
Sources and contributors linked at the record, term, and note levels; require sourcing
Patricia Harpring , thanks to Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Editorial work to transform data acceptable for LOD; e.g., associative relationship typesChallengesChallenges
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
HTML XML RDFHTML XML RDF
Patricia Harpring , from Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
CONA
AAT
TGN
ULAN
TGN
Enable users to find information that was previously not
English Heritag
Other Sites
Other Sites
Other Sites
Enable users to find information that was previously not available or not linked
Proven-ance Index
GettySearch
Arches
Heritage
Flemish Heritag
LA Survey
SitesOther Sites
Other Other Sites
CONA
Museum
AATA
Heritage
BulgariaOther Sites
Other Sites
Sites
CONA
AAT
TGN
ULAN
SpanishTranslation
Project
ChineseTranslation
Project
D t h
VIAF
Other Sites
AAT
TGN
ULAN
TGN
RKD
Project DutchTranslation
Projects
Iconography
Other Sites
LCSHOther Sites
Other Sites
TGN
gLCSHOther Sites Other
SitesOther Sites
Other Sites
Patricia Harpring , from Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Patricia Harpring March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
VocabuVocabu-- W t th larieslaries
linked to linked to We are at the
beginning of the journeyother LOD other LOD
may allow may allow journey
We look forward to seeing what resources research research
and and seeing what resources will link or be linked to the Getty vocabulariesdiscovery discovery
never never
the Getty vocabularies
before before possiblepossible
Patricia Harpring March 2014 Getty Vocabs as LOD copyright J. Paul Getty Trust
Potential future use case: Researcher finds digitized books having to do Potential future use case: Researcher finds digitized books having to do with incense burners on Getty Portal; follows links for research, discovery
What now takes many hours or days to research, will be faster and easier with LOD, including the application of inference: creating
t i l b d l i li d t i ti new triples based on logic applied to existing ones
Another use case would be linking images using LOD metadata metadata at image repositories
Prezi presentation
http://prezi.com/mrdd5lccukns/research-using-the-getty-vocabularies/?utm ca
Patricia Harpring , thanks to Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
/ _mpaign=share&utm_medium=copy
Potential future use case: Researcher finds books having to do with Potential future use case: Researcher finds books having to do with incense burners on Getty Portal; follows links for research, discovery
Patricia Harpring , with Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Potential future use case: Researcher finds books having to do with Potential future use case: Researcher finds books having to do with incense burners on Getty Portal; follows links for research, discovery
Patricia Harpring , with Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Patricia Harpring , with Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Using TGN to link to d GISmaps and GIS
Patricia Harpring , with Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Patricia Harpring , thanks to Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Patricia Harpring , with Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Patricia Harpring , with Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Patricia Harpring , with Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
CONA ld id bj t CONA could provide subject access
Patricia Harpring , with Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Patricia Harpring , with Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
etc., etc., etc.Patricia Harpring , with Joan Cobb March 2014 Getty Vocabs as LOD For educational purposes. © J. Paul Getty Trust
Patricia Harpringmanaging editorGetty Vocabulary Programpharpring@getty edupharpring@getty.edu
Recommended