F.J Bergersen <br/><br/>
Methods for evaluating biological Nitrogen fixation 

 - New York  John Wiley & Sons  1980 
 - 702p 
<br/><br/>F.J Bergersen: Methods for evaluating biological Nitrogen fixation.  New York.  John Wiley & Sons, 1980. 0-471-2775902--(589.95BER)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>0-471-2775902 
<br/><br/><label>Dewey Class. No.: </label>589.95  / BER