Provisional guidelines on standard international age classifications. 

 - New York :  Department of International Economic and Social Affairs (DIESA) ,  1982 
 - iv, 28p. :  ill. ;  28 cm.  
 - Studies papers., Series F ;, no. 74  .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Age distribution (Demography) <br/>Age<br/>Age--Classification
<br/><br/><label>Gov. Doc. Class. No.: </label>UN DIESA SP-M-74