Chawla, O. P. <br/><br/>
Advances in biogas technology 
by O. P. Chawla 
 - New Delhi  Indian Council of Agricultural Research  1986 
 - [6],144p.:ill.,tables; 24cm.- 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bigas-India<br/>Gobar gas-India
<br/><br/><label>Dewey Class. No.: </label>665.773  / CHA