Demographic yearbook 1981  
/ Department of International Economics and Social Affairs  
 - 33rd ed.  
 - New York:   Publishing Service United Nations,   1983 
 - ix, 1111p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics 
<br/><br/><label>Subjects--Index Terms: </label>Population  
<br/><br/><label>Universal Decimal Class. No.: </label>R 312(058)   / M3