The sex and age distributions of population  : the 1990 revision of the United Nations global population estimates and projections 
/ Department of International Economic and Social Affairs of the United Nations Secretariat 
. - New York  : United Nationss, 1991
. - VIII-387 p.  : couv. ill.  ; 28 cm. 
 - Population Studies  122 .
<br/><br/>Bibliogr. p. 391 
<br/><br/><label>ISBN: </label>9211512204 
<br/><br/><label>Source: </label> Fonds BC 
<br/><br/><label>Universal Decimal Class. No.: </label>312.9