APL Congress 73 
/ Proceedings of the APL congress 73, Copenhagen, Denmark, 22-24 August, 1973 
 - New York:  American Elsevier Publishing Co., Inc.,   1973 
 - x, 506p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science
<br/><br/><label>Universal Decimal Class. No.: </label>D 681.3(082.2)  / L3