National referral services for industry  : World directory  

 - 4th ed.  
 - The Hague:    Federation International de  Documentaton,   1974 
 - 88p.  
 - FID   522 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science 
<br/><br/><label>Subjects--Index Terms: </label>Directory  Documentation