A CHINESE biogas manual popularising technology in the countryside / 
edited by Ariane van Buren; translated by Michael Crook 
 - London  Intermediate Technology pub.  1985 
 - 135 p. 
<br/><br/><label>ISBN: </label>903031655 
<br/><br/><label>Dewey Class. No.: </label>665.73  / CHI