INTERNATIONAL telefax, telex and teletex database. 

 - Darmstadt :  Jaeger and Waldmann,  1993. 
 - 2 discos compactos 
<br/><br/> J+W International Commdisc 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GUIAS
<br/><br/><label>Universal Decimal Class. No.: </label>058