Nitrogen as an ecological factor :  the 22nd symposium of the British Ecological Society, Oxford, 1981 / 
edited by J.A. Lee, S. McNeill and I.H. Rorison. 
 - Oxford :  Blackwell Scientific,  1983 
 - ix,470p, 1p of plates :  ill, diagrs, graphs ;  25cm 
<br/><br/>Includes bibliographies and index 
<br/><br/><label>ISBN: </label>0632010746 
<br/><br/><label>Nat. Bib. No.: </label>b8317493 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrogen--Fixation
<br/><br/><label>Dewey Class. No.: </label>546 .71159