Essential aspects of agricultural crop production : 
edited by Fred C. Blank. 
 - New Delhi :  Allied Scientific Pub.,   1998 
 - 329 p.    21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops and soils.   ;Agricultural productivity.  
<br/><br/><label>Universal Decimal Class. No.: </label>338.163