Thompson, J. P. <br/><br/>
Azotobacteraceae :  the taxonomy and ecology of the aerobic nitrogen - fixing bacteria / 
J. P. Thompson and V. B. D. Skerman 
 - London :  Academic Press,  1979 
 - xxi, 417 p. :  ill, maps ;  24 cm. 
<br/><br/>Bibliography : p. 395-405 
<br/><br/><label>ISBN: </label>0126890501 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Azotobacter--Classification