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William Lockeretz. 1985. U. S. Organic Farming: What we can and cannot learn from on-farm research. Pages 96-103. In: T. C. Eden, C. Fridgen, S. L. Battenfield (editors). Sustainable Agriculture and Integrated Farming Systems. East Lansing, Michigan State University Press.
Keywords: descriptive, evaluative, applied, diagnostic, explanatory/predictive, structure and methods of on-farm research, agronomic, economic and sociological studies, on-farm research—some examples, strengths and weaknesses of on-farm research, priorities in organic farming research