Report of the ninth session (25 Fevruary-8 March 1957).   

 - New York :   United Nations,   1957. 
 - 17 p. ;    30 cm. 
 - Economic and Social Council. Official records, Twenty-Third Session, supp;   no. 4 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population.--------