Biogas technology problems and prospects:   Proceedings of the national workshop on biogas technology 

 - Ludhiana:   U S G Publishers & Distributors,   1987 
 - 173p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemical technology
<br/><br/><label>Subjects--Index Terms: </label>Biogas 
<br/><br/><label>Universal Decimal Class. No.: </label>662.65  / M7