Texas Instruments <br/><br/>
Telecommunication circuits data book , transmission switching subscribes and transient suppressors 

 - USA  TEXAS INSTRUMENTS  1991 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DATA BOOK-TELECOMMUNICATION CIRCUITS
<br/><br/><label>Dewey Class. No.: </label>621.3815 TEL'T