VYAS (S C);others. <br/><br/>
Biofertilizers and organic farming 

 - Nadiad  Elsevier India  1998 
 - viii,252  PB 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture Techniques & Equipments
<br/><br/><label>Dewey Class. No.: </label>631.584 VYAS