Bergersen, F.J <br/><br/>
Methods for evaluating biological nitrogen fixation 

 - Chichester  John Wiley  1980 
 - 702 p. 
<br/><br/><label>ISBN: </label>0471277592 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants
<br/><br/><label>Dewey Class. No.: </label>581.13  / MET