Guid book on biogas development 

 - New  York United Nations U S A    1980 
 - 127p.  cm. 
 - "Its, Energy Resoruces development Series. 21" .
<br/><br/><label>Standard No.: </label>91393 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gas Industry
<br/><br/><label>Dewey Class. No.: </label>"X9(F558).1(X).N7, M0/UN"