Soil survey of San Simon area, Arizona :
parts of Cochise, Graham, and Greenlee Counties.

APA Citation

Vogt, K. D., University of Arizona. Agricultural Experiment Station., United States. Soil Conservation Service. (1980). Soil survey of San Simon area, Arizona: parts of Cochise, Graham, and Greenlee Counties. [Washington, D.C.?]: U.S. Dept. of Agriculture, Soil Conservation Service.

MLA Citation

Vogt, Kenneth D, University of Arizona. Agricultural Experiment Station, and United States. Soil Conservation Service. Soil Survey of San Simon Area, Arizona: Parts of Cochise, Graham, And Greenlee Counties. [Washington, D.C.?]: U.S. Dept. of Agriculture, Soil Conservation Service, 1980.