A manual for the preparers and users of eco-efficiency indicators 
By the United Nations 
 - New York:  UNITED NATIONS  2004 
 - xiii, 114p. :ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BUSINESS<br/>TRADE POLICY--ZIMBABWE
<br/><br/><label>LC Class. No.: </label>UNO(02)