More about James A. Duffield:
| | Books by James A. Duffield: Books in the extended shelves: Duffield, James A.: Estimating farm labor elasticities to analyze the effects of immigration reform (U.S. Dept. of Agriculture, Economic Research Service, Agriculture and Rural Economy Division, 1990), also by United States. Department of Agriculture. Economic Research Service. Agriculture and Rural Economy Division (page images at HathiTrust) Duffield, James A.: Estimating the net energy balance of corn ethanol : an Economic Research Service report (U.S. Dept. of Agriculture, ERS, 1995), also by Hosein Shapouri, Michael S. Graboski, and United States. Department of Agriculture. Economic Research Service (page images at HathiTrust) Duffield, James A.: Will immigration reform affect the economic competitiveness of labor-intensive crops? (U.S. Dept. of Agriculture, Economic Research Service, Agriculture and Rural Economy Division, 1991), also by Lewell F. Gunter and United States. Dept. of Agriculture. Economic Research Service. Agriculture and Rural Economy Division (page images at HathiTrust)
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