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1939 Agricultural conservation program. Proposed changes from the 1938 Agricultural conservation program

by United States. Agricultural Adjustment Administration

Cover of 1939 Agricultural conservation program. Proposed changes from the 1938 Agricultural conservation program

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Natural resourcesLand resourcesLand managementSoil scienceSoil resource managementSoil conservationUnited States. Agricultural Conservation Program
1939 Agricultural conservation program. Proposed changes from the 1938 Agricultural conservation program by United States. Agricultural Adjustment Administration — book · Vinony