Updated guide book in biogas development 

 - 2 
 - New  York United Nations U S A    1984 
 - 175p.  cm. 
 - "UN, Energy Resoruces Development Series . 27" .
<br/><br/><label>Standard No.: </label>91394 
<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;M4/UN"