Directory of United Nations information systems and services. 

 - Geneva :    Inter-Organization Board for Information Systems,    197 8. 
 - 1 v. ;    30 cm. 
 - 1978. 
<br/><br/><label>Subjects--Corporate Names: </label><br/> United Nations -- Information services -- Directories.
<br/><br/><label>Subjects--Topical Terms: </label><br/> International agencies -- Information services -- Directories.