B.S. Dwivedi <br/><br/>
Sulphur fertilization for sustaining productivity of rice- wheat system in western uttar pradesh 

 - Meerut  Project Directorate for Cropping for Systems Research  2001 
 - 35p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>631.825  / DWI