Stewart W D P Ed. <br/><br/>
Nitrogen fixation by free-living micro-organisms 

 - London  Cambridge University Press         1975 
 - xxi, 471p.  cm. 
 - International biological programme; 6 .
<br/><br/><label>Standard No.: </label>49564 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant Nitrogen
<br/><br/><label>Dewey Class. No.: </label>I:3E150, L5