Das, P. C.  <br/><br/>
Manures and fertilisers  

 - New Delhi  Kalyani Publishers  1993 
 - v,130p.  22cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers, soil conditioners, growth regulators<br/>Specific techniques
<br/><br/><label>Dewey Class. No.: </label>631.8  / DAS