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

 - New Delhi  Indian Council Of Agricultural research   1993 
 - iv,111 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological Nitrogen Fixation
<br/><br/><label>Dewey Class. No.: </label>631.8/R1801B