A graphic summary of Iowa crop yields and land productivity by townships, 1940-1944.
APA Citation
Iowa Crop and Livestock Reporting Service., Iowa. Department of Agriculture., United States. Bureau of Agricultural Economics. (1947). A graphic summary of Iowa crop yields and land productivity by townships, 1940-1944. Des Moines.
MLA Citation
Iowa Crop and Livestock Reporting Service, Iowa. Department of Agriculture, and United States. Bureau of Agricultural Economics. A Graphic Summary of Iowa Crop Yields And Land Productivity by Townships, 1940-1944. Des Moines, 1947.
Warning: These citations may not always be complete (especially for serials).