Giller,Ken E. <br/><br/>
Nitrogen fixation in tropical croping systems  
/ Ken E.Giller,..and Kate J.Wilson,.. 
. - Wallingford  : C.A.B international, cop.1991
. - XII-313 p.  : ill.,couv.ill.en coul  ; 25 cm. 
<br/><br/>Index 
<br/><br/><label>ISBN: </label>0851986714 
<br/><br/><label>Universal Decimal Class. No.: </label>631.841