Soil Survey of Pittsburg County, Oklahoma Marvon Harold Layton Published: 1937 Total Pages: 44 Get eBook
Soil Survey: Pittsburg County, Oklahoma Lyle C. Shingleton Published: 1971 Total Pages: 196 Get eBook
List of Publications of the United States Department of Agriculture from January 1936 to December 1940, Inclusive Published: 1941 Total Pages: 74 Get eBook
List of Publications of the United States Department of Agriculture from January 1936 to December 1940, Inclusive United States. Department of Agriculture Published: 1941 Total Pages: 80 Get eBook
