O. P. Rupela <br/><br/>
Extending nitrogen fixation research to farmers fields 

 - Patanacheru  International Crops research  Institute for the Semi-Arid Tropics  1997 
 - 404p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>92-9066-378-2 
<br/><br/><label>Dewey Class. No.: </label>589.95  / ICRISAT