United Nations. Department of Economic and Social Affairs. <br/><br/>
Methods of analysing census data on economic activities of the population/ 
United Nations. Department of Economic and Social Affairs. 
 - New York:  United Nations,  1968. 
 - 143p.: 
 - Population studies , no. 43. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Demography-Mathematical models
<br/><br/><label>Dewey Class. No.: </label>331.112