SUBBA RAO, N. S. <br/><br/>
Biofertilizers in Agriculture. 

 - 2nd 
 - New Delhi  Oxford & IBH Publishing Co. P  vt. Ltd.   1986 
 - 186p. 
<br/><br/><label>ISBN: </label>8120401255 
<br/><br/><label>Dewey Class. No.: </label>631.86