Nitrogen fixation by free-living micro-organisms / 
edited by W. D. P. Stewart 
 - Cambridge :  Cambridge University Press,  2011 
 - xxi, 471 p. :  ill. ;  23 cm. 
 - International Biological Programme ;  6 .
<br/><br/> "Papers presented at an IBP synthesis meeting on nitrogen fixation held in Edinburgh in September 1973, together with contributions submitted by other[s]." 
<br/><br/>Includes bibliographies and index 
<br/><br/><label>ISBN: </label>9780521279321 (pbk.) 9780521207089 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrogen--Fixation--Congresses<br/>Nitrogen-fixing microorganisms--Congresses