Problems of migration statistics. 

 - New York :  United Nations, Dept. of Social Affairs,  1949. 
 - Population studies ; no. 5 United Nations. [Document] ST/SOA/Series A/5 .
 - Population studies (New York, N.Y.) ;  no. 5. .
<br/><br/> United Nations publications. Sales no. 1950. XIII. 1. 
<br/><br/>Bibliography: p. 56-58. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Emigration and immigration -- Statistics.--Emigration and immigration -- Statistics.