Environmentally sound technology for sustainable d 

 - New York  United Nations U. S. A.       1992 
 - 268p.  cm. 
<br/><br/> United Nation, Advanced Technology Assessment System, 71. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Economics
<br/><br/><label>Dewey Class. No.: </label>X:(G:55)0gF, N2