NALDC

Main content area

MLA

Gerdel, R. W. Soil losses from cultivated strips in strip-cropped fields in the Ohio Valley Region . U.S. Dept. of Agriculture, 1940.

APA

Gerdel, R. W. (1940). Soil losses from cultivated strips in strip-cropped fields in the Ohio Valley Region. U.S. Dept. of Agriculture.

Chicago

Gerdel, R. W. Soil losses from cultivated strips in strip-cropped fields in the Ohio Valley Region . U.S. Dept. of Agriculture, 1940.