Nutman, P. S. <br/><br/>
Symbiotic in nitrogen fixation in plants 

 - New York  Cambridge University Press  1976 
 - xxviii,584p.  24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrogen
<br/><br/><label>LC Class. No.: </label>QR89.7.S8