Soil conservation
[by] Helmut Kohnke [and] Anson R. Bertrand.

APA Citation

Kohnke, H., Bertrand, A. Rabb. (1959). Soil conservation. New York: McGraw-Hill.

MLA Citation

Kohnke, Helmut, 1901-1991, and Anson Rabb Bertrand. Soil Conservation. New York: McGraw-Hill, 1959.

Warning: These citations may not always be complete (especially for serials).