Productivity and erodibility of U.S. croplandFormat: [microform] /
Author: Heimlich, Ralph E.
Publisher: Washington, DC : U.S. Dept. of Agriculture, Economic Research Service,
Date: [1989] This title can be found in 2 Iowa libraries.
Energy use and conservation in the poultry and egg industry /Author: Rogers, George Burnet,
Publisher: Washington, D.C. : U.S. Dept. of Agriculture, Economic Research Service,
Date: 1976. This title can be found in 1 Iowa libraries.
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