Rao, N.S.S. <br/><br/>
Biofertilizers in agriculture and forestry 

 - 3rd 
 - New Delhi  Oxford & IBH  1993 
 - xi, 242p. 
<br/><br/><label>ISBN: </label>8120407911 
<br/><br/><label>Dewey Class. No.: </label>631.8  / S92B