Giller,Ken E. <br/><br/>
Nitrogen fixation in tropical cropping systems 

 - 2nd ed. 
 - Wallingford  CABI  2001 
 - xx,423p.  HB  22cm. 
<br/><br/><label>ISBN: </label>0851994172 
<br/><br/><label>Dewey Class. No.: </label>633.30913  / GIL