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Start Over You searched for: Author Agricultural Adjustment Administration Remove constraint Author: Agricultural Adjustment Administration Publish Year Decade 1930 - 1939 Remove constraint Publish Year Decade: 1930 - 1939

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680. Soil conservation. [1937 agricultural conservation program, East Central and Northeast divisions, Cartographic Section, Mapping activities involving use of aerial photographs]: pt. 1, Aerial photograph scale determination, office procedure; pt. 2, Aerial photograph scale determination, field engineering procedure.