Soil conservation : hearing before the Subcommittee on Soil and Water Conservation of the Committee on Agriculture, Nutrition, and Forestry, United States Senate, Ninety-seventh Congress, Congress, first session, August 31, 1981--Burlington, Iowa.
|Corporate Author:||United States.|
Washington : U.S. G.P.O., 1981.
Soil conservation > United States.
iv, 80 p. ;
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