Age and sex structure of urban and rural populations,1970-2000 :  the 1980 Assessment / 

 - U N :  Population division,  1982. 
 - 202p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population
<br/><br/><label>Dewey Class. No.: </label>307.763  / AGE/A