Postgate, John R. <br/><br/>
Nitrogen fixation / 
John Postgate. 
 - 2nd ed. 
 - London :  Edward Arnold,  1987. 
 - vi, 73 p. :  ill. 
 - New studies in biology .
<br/><br/><label>ISBN: </label>0713129468 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrogen-fixing microorganisms.<br/>Nitrogen cycle.<br/>Root-tubercles.