Manual for the preparers and users of eco-efficien 

 - New York  United Nations U. S. A.       2004 
 - 114p.  cm. 
<br/><br/><label>ISBN: </label>9111126207 
<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), P4