Soil conservation : hearings before the Subcommittee on Environment, Soil Conservation, and Forestry of the Committee on Agriculture, Nutrition, and Forestry, United States Senate, Ninety-sixth Congress, second session, August 13, 1980--Waterloo, Iowa, August 14, 1980--Ames, Iowa, August 15, 1980--Fairfield, Iowa.
|Corporate Author:||United States.|
Washington : U.S. G.P.O., 1980.
v, 332 p. :
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