The state of the world environment. 

 - Nairobi :  United Nations Environment Programme (UNEP) ,  1990 
 - 72p. :  ill. ;   24 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9280712187 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hazardous wastes<br/>Environment<br/>Greenhouse effect<br/>Climate
<br/><br/><label>Gov. Doc. Class. No.: </label>UN EP Sta