Browsing by Author "Simkins, Charles A."
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Item Fertilizer for Potatoes in Minnesota's and North Dakota's Red River Basin(University of Minnesota. Agricultural Extension Service, 1974) Simkins, Charles A.; Dahnke, William C.; Plissey, Edwin S.Item Guide to computer programmed soil test recommendations in Minnesota (revised 1978)(University of Minnesota. Agricultural Extension Service, 1978) Fenster, William E.; Overdahl, Curtis J.; Simkins, Charles A.; Grava, John; Schoper, Robert P.Item Guide to computer programmed soil test recommendations in Minnesota (revised 1981)(University of Minnesota. Agricultural Extension Service, 1981) Jokela, William E.; Fenster, William E.; Overdahl, Curtis J.; Simkins, Charles A.; Grava, JohnItem Guide to computer programmed soil test recommendations in Minnesota 1971(University of Minnesota. Agricultural Extension Service, 1971) Fenster, William E.; Overdahl, Curtis J.; Simkins, Charles A.; Grava, JohnItem Guide to computer programmed soil test recommendations in Minnesota 1976(University of Minnesota. Agricultural Extension Service, 1976-01) Fenster, William E.; Overdahl, Curtis J.; Simkins, Charles A.; Grava, John