Telecommunications : Telephone networks 2.. 

 - Swedish  Chartwell Bratt  1987. 
 - 176p.  ill.  30cm 
<br/><br/><label>ISBN: </label>9144249918  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems
<br/><br/><label>Dewey Class. No.: </label>621.38 TEL 1986