Nijaguna.B.T <br/><br/>
Biogas Technology 

 - 1 
 - Delhi  New Age International   2002 
 - 287 
<br/><br/><label>ISBN: </label>978-81-224-1380-9 
<br/><br/><label>Dewey Class. No.: </label>665.776 P02 NIJ