Directory of United Nations information sources. 

 - 5th ed. 
 - New York :    United Nations,    1994 
 - xiii, 574 p. ;    30 cm. 
<br/><br/><label>ISBN: </label>9211006813 
<br/><br/><label>Subjects--Topical Terms: </label><br/> United Nations -- Information services -- Directories.<br/> International agencies -- Information services -- Directories.