The role of potassium in agriculture / 
edited by V.J. Kilmer, S.E. Younts, N.C. Brady ; managing editor Richard C. Dinauer ; assistant editor David M. Kral 
 - Madison, Wis. :  American Society of Agronomy,  1981 
 - 509 p. 
<br/><br/>Includes bibliographies 
<br/><br/><label>Subjects--Topical Terms: </label><br/>POTASSIUM FERTILIZERS--CONGRESSES<br/>SOILS--POTASSIUM CONTENT--CONGRESSES<br/>PLANTS, EFFECT OF POTASSIUM ON--CONGRESSES<br/>POTASSIUM IN AGRICULTURE
<br/><br/><label>LC Class. No.: </label>S645  / R643