Soil survey Audubon county Iowa /
by T.H. Benton and W.J. Geib.
APA Citation
Benton, T. H., Geib, W. Jacob., United States. Soil Conservation Service., United States. Bureau of Chemistry and Soils. (1933). Soil survey Audubon county Iowa. Washington, D. C.: United States Department of Agriculture.
MLA Citation
Benton, Thomas H, Warren Jacob Geib, United States. Soil Conservation Service, and United States. Bureau of Chemistry and Soils. Soil Survey Audubon County Iowa. Washington, D. C.: United States Department of Agriculture, 1933.
Warning: These citations may not always be complete (especially for serials).