Entry of Alternative Fuels in a Volatile U.S. Gasoline Market von Vedenov, Dmitry V., Duffield, James A., Wetzstein, Michael E.

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Bioenergy in a Global Environment: Discussion von Duffield, James A.

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Biodiesel: Production and Economic Issues von Duffield, James A.

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Life-cycle energy, GHG and cost comparison of camelina-based biodiesel and biojet fuel von Dangol, Namrata, Shrestha, Dev S., Duffield, James A.

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Biodiesel as a Substitute for Petroleum Diesel in a Stochastic Environment von Tareen, Irfan Y., Wetzstein, Michael E., Duffield, James A.

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Testing for Disequilibrium in the Hired Farm Labor Market: Reply von Duffield, James A., Coltrane, Robert

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Testing for disequilibrium in the hired farm labor market von Duffield, James A., Coltrane, Robert

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Net Energy Balancing and Fuel-Cycle Analysis von Shapouri, Hosein, Wang, Michael, Duffield, James A

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Effect of U.S. immigration reform on labor-intensive agricultural commodities von Gunter, L.F. (University of Georgia, Athens), Jarrett, J.C, Duffield, J.A

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Assessment of Biofuels von Duffield, James A, Shapouri, Hosein, Wang, Michael

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Ethanol policy: past, present, and future von Duffield, James A, Xiarchos, Irene M, Halbrook, Steve A

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The tourist in France / by Thomas Roscoe ; illustrated from drawings by J. D. Harding von Roscoe, Thomas (1791-1871). Auteur du texte

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Old towns & new domains; or, Birmingham and Canada revisited von Duffield, A. J. 1821-1890

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Effect of U. S. Immigration Reform on Labor-Intensive Agricultural Commodities von Gunter, Lewell F, Jarrett, Joseph C, Duffield, James A

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Testing for Disequilibrium in the Hired Farm Labor Market: Comment von Cross, Timothy L., Nuckton, Carole Frank

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Will immigration reform affect the economic competitiveness of labor-intensive crops? / James A. Duffield, Lewell Gunter von Duffield, James A

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Estimating farm labor elasticities to analyze the effects of immigration reform / James A. Duffield : c.2 von Duffield, James A

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Overview: Developing New Energy Sources from Agriculture von James A. Duffield

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Evolution of Renewable Energy Policy von James A. Duffield, Keith Collins

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U.S.-Mexico linkages: labor & investment von Duffield, J.A, Hamm, S, Handy, C.R

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