Alaska DGGSdggs.alaska.gov/webpubs/usgs/gp/oversized/gp-1016sht01.pdf · Hand contouring aided by...
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Alaska DGGSdggs.alaska.gov/webpubs/usgs/gp/oversized/gp-1016sht01.pdf · Hand contouring aided by knowledge of available geologic and aero- magnetic data was used to draw the earlier