Biofertilizers & organic farming 

 - New Delhi  Gene-Tech Books  2009 
 - viii, 397 pages. 
<br/><br/> Include index 
<br/><br/><label>ISBN: </label>8189729209 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers
<br/><br/><label>Dewey Class. No.: </label>631.847  / BIO