x  x <br/><br/>
Recent developments in nitrogen fixation  x 

 - x 
 - London,New York  Academic Press  1977 
 - xxiv,622 
<br/><br/>includes 
<br/><br/><label>ISBN: </label>0125173504 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrogen-fixation Micro-organism 
<br/><br/><label>Dewey Class. No.: </label>631.84/R295