Nitrogen in soils, crops and fertilizers  

 - New Delhi:   Indian Society of Soil Science,   1984 
 - vi, 520p.  
 - Bulletin   13 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture 
<br/><br/><label>Subjects--Index Terms: </label>Oil cakes  Organic matter 
<br/><br/><label>Universal Decimal Class. No.: </label>631.84   / M4