Pratap Narain <br/><br/>
Nitrification inhibitors and efficiency of nitrogen fertilizer use for paddy and wheat 

 - M Sc (Agri) 
 - Delhi  New Delhi  1969 
 - 200p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>631.41  / NAR