Ayanaba A & Dart P J  Eds <br/><br/>
Biological Nitrogen Fixation in Farming Systems of Tropics : Symposium Papers 

 -  John Wiley & Sons, N'York 
 - pp 377;   24*16 
<br/><br/><label>Dewey Class. No.: </label>J:1:41p,N75/N77/B16154