The crop system in Iowa county /
by J.A. Hopkins, Jr.
APA Citation
Hopkins, J. A. (1929). The crop system in Iowa county. Ames, Iowa: Agricultural Experiment Station, Iowa State College of Agriculture and Mechanical Arts.
MLA Citation
Hopkins, John A., 1897-. The Crop System In Iowa County. Ames, Iowa: Agricultural Experiment Station, Iowa State College of Agriculture and Mechanical Arts, 1929.
Warning: These citations may not always be complete (especially for serials).