N.S. Subba Rao <br/><br/>
Biological Nitrogen fixation 

 - New Delhi  Indian Council of Agricltural Research   1993 
 - 111 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological Nitrogen fixation
<br/><br/><label>Dewey Class. No.: </label>368.12/R1801B