GUPTA, P. K. <br/><br/>
A Handbook of soil, Fertilizer and Manure. 

 - Joghpur  Agrobios.  2004 
 - xvi, 591p. 
<br/><br/><label>ISBN: </label>8177541528 
<br/><br/><label>Dewey Class. No.: </label>631.8