by C. S. Simmons ... [and others] ; United States Department of Agriculture, Bureau of Plant Industry ; in cooperation with the Univeristy of Minnesota Agricultural Experiment Station
Date
[1941]
Series
U. S. Bureau of plant industry. [Soil survey report] Series 1935 ; no. 15
prepared by the Minnesota Department of Transportation, Technical Services Division; in cooperation with the U.S. Department of Transportation, Federal Highway Administration ; Hudson Map Company