World population :  at the turn of the century / 

 - New York :  United Nations,  1989. 
 - 126p. : 
<br/><br/><label>ISBN: </label>9211511747 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population
<br/><br/><label>Dewey Class. No.: </label>304.6  / WOR/W