Symposium TVA National Fertilizer Development Center Muscle Shoals, A., Tennessee Valley Authority, American Potash Institute, American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, . . . N. C. Brady. (1968). The role of potassium in agriculture: Proceedings of a symposium. Madison, Wisconsin: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America.

Symposium TVA National Fertilizer Development Center Muscle Shoals, Alabama), Tennessee Valley Authority, American Potash Institute, American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, V. J. Kilmer, S. E. Younts, and N. C. Brady. The Role of Potassium in Agriculture: Proceedings of a Symposium. Madison, Wisconsin: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America, 1968.

Symposium TVA National Fertilizer Development Center Muscle Shoals, Alabama), et al. The Role of Potassium in Agriculture: Proceedings of a Symposium. Madison, Wisconsin: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America, 1968.