The role of potassium in agriculture / 
edited by N. c. Brady. 
 - Madison :  American society of Agronomy,  1968. 
 - xvi, 509 p. :  illus. ;  24 cm. 
<br/><br/> "Proceedings of a symposium sponsored and financed by the Tennessee Valley Authority and the  American Potash Institute and cosponsored by the American Soceity of Agronomy, Crop Science Society of America, and soil Science society of America, and held at the National fertilizer development Centre, TV, Muscle Shoals, Alabama, June 18-19, 1968" 
<br/><br/>Includes bibliographies. 
<br/><br/> Open access. 
<br/><br/><label>LCCN: </label>6828346  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Potassium fertilizers--Congresses.<br/>Soils--Potassium content--Congresses.<br/>Plants--Effect of potassium on--Congresses.