GUPTA, P. K. <br/><br/>
A handbook of soil, fertilizer and manure 

 - Joghpur :  Agrobios.  2003 
 - xvi, 591p 
<br/><br/><label>ISBN: </label>81-7754-152-8 
<br/><br/><label>Dewey Class. No.: </label>631.4