Telecommunications transmission engineering /  
technical personnel , Bellcore and Bell Operating Companies. 
 - 3rd ed. 
 - n.p. :    Bellcore,    c1990. 
 - 3 v. :    ill. ;    24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>v. 1. Principles -- v. 2. Facilities -- v. 3. Networks and services. 
<br/><br/><label>ISBN: </label>1878108034 (v. 3) 1878108042 (3 vol set) 
<br/><br/><label>LCCN: </label>90-062180 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Telecommunication.
<br/><br/><label>Dewey Class. No.: </label>621.382 TEL