Young, John E. <br/><br/>
The next efficiency revolution :  creating a sustainable materials economy / 
John E. Young & Aaron Sachs 
 - Washington :  WI ,  1994 
 - 58p. :  ill. ;  20 cm. 
 - Worldwatch paper  No. 121 .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sustainable development<br/>Materials processing
<br/><br/><label>Gov. Doc. Class. No.: </label>US WI P-121