Agriculture as a producer and consumer of energyKeith J. Collins, James A. Duffield · First published 2005Open the Tome
Will immigration reform affect the economic competitiveness of labor-intensive crops?James A. Duffield · First published 1991Open the Tome
Estimating farm labor elasticities to analyze the effects of immigration reformJames A Duffield · First published 1990Open the Tome
Labor expenditures help determine farms affected by immigration reformJames A Duffield · First published 1989Open the Tome
Impacts of foreign and absentee investment in U.S. farmland on U.S. farms and rural communitiesJames A. Duffield · First published 1983Open the Tome
