A method of estimating the economic effects of planned conservation on an individual farm /

"Soil Conservation Service and Bureau of Agricultural Economics, U.S. Dept. of Agriculture, in cooperation with the Iowa Agricultural Experiment Station."

U.S. farm numbers, sizes, and related structural dimensions : projections to year 2000 /

Issued July 1980.

United States animal husbandry experiment farm, Beltsville, Maryland /

Cover title.

Research in mechanical farm equipment /

Cover title.