Symbiotic nitrogen fixation in plants  

 - London:   Cambridge University Press,   1976 
 - xxviii, 584p.  
<br/><br/><label>ISBN: </label>0 521 20645 6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture 
<br/><br/><label>Subjects--Index Terms: </label>Bacteria  Taxonomy  
<br/><br/><label>Universal Decimal Class. No.: </label>631.84   / L6