Vyas S K & Grewal N S  Eds <br/><br/>
Biogas Technology : Proceedings of National Seminar on Biogas Technology 

 -  VSG Pub & Distr, Ludhiana 
 - pp 165;   21*14 
<br/><br/><label>Dewey Class. No.: </label>F559p2,N81/N83/B16131