International exchange of social welfare personnel. 

 - Lake Success, New York :  United Nations,  1949. 
 - Its Technical assistance for social progress no.1 .
<br/><br/> United Nations. [Document] E/CN.5/105. Rev.1.  "United Nations publications. Sales no.: 1949.IV.6." 
<br/><br/><label>LCCN: </label>50003460 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social workers.