Srivastava, P. C. <br/><br/>
Trace elements in crop production / 
by P. C. Srivastava, U. C. Gupta 
 - Lebanon, N. H. :  Science Publishers,  1996 
 - 356 p. :  ill. ;  25 cm. 
<br/><br/>p. 266-334 
<br/><br/><label>ISBN: </label>1886106622  RM291.10 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trace elements in agriculture<br/>Plants, Effect of trace elements on