UNITED NATIONS. DEPARTMENT OF ECONOMIC AND SOCIAL AFFAIRS <br/><br/>
Demographic Yearbook : historical supplement : 1948-1997 

 - Edición en CD-ROM 
 - New York  United Nations  2000 
 - CD-ROM 
<br/><br/><label>ISBN: </label>ISSN 1020-7953 
<br/><br/><label>Universal Decimal Class. No.: </label>312(058)