Demographic year book 1949-50 :  annuaire demographique / 

 - 2nd ed. 
 - New York :  United nations publication,  1950. 
 - 557p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Year book
<br/><br/><label>Dewey Class. No.: </label>312.058  / DEM/D