P.K. Gupta <br/><br/>
Handbook of Soil, Fertilizer and Manure 

 - 2nd Ed 
 - Jodhpur  Agrobios (India)  2007 
 - 591p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>81-7754-152-8 
<br/><br/><label>Dewey Class. No.: </label>631.4  / GUP