Micronutrients in agriculture :  proceedings of a symposium held at Muscle Shoals, Alabama, April 20-22, 1971, and co-sponsored by the Tennessee Valley Authority and the Soil Science of America / 
editorial committee : J. J. Mortvedt, chairman, P. M. Giordano [and] W. L. Lindsay. Managing editor: Richard C. Dinauer. Assistant editors: Vonda S. Clark [and] Patricia Eith. 
 - Madison, Wis. :  Soil Science Society of America,  1972. 
 - xviii, 666 p. :  ill. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trace elements in agriculture--Congresses.<br/>Trace elements in nutrition--Congresses.