A. Ayanaba <br/><br/>
Biological nitrogen fixation in farming systems of the tropics 

 - New York  John Wiley and Sons  1977 
 - 377p 
<br/><br/>A. Ayanaba & P. J. Dart: Biological nitrogen fixation in farming systems of the tropics.  New York.  John Wiley and Sons, 1977. 0-471-99499-5--(589.9506AYA)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>0-471-99499-5 
<br/><br/><label>Dewey Class. No.: </label>589.9506  / AYA