RAO, Subba N. S. <br/><br/>
Soil microbiology  soil microorganisms and plant growth   407p.; ill. 
N. S. Subba Rao.-  
 -   4th ed.  
 -  Oxford & IBH Publishers,   1977. 
<br/><br/> “It includes references and index”<br/><br/> 
<br/><br/><label>ISBN: </label>978-81-204-1383-0