Bigelow, Stephen J. <br/><br/>
Understanding telephone electronics . 

 - 3rd. ed. 
 - USA:  SAMS,  1991.  "1994" 
 - v,367p.; 24cm 
<br/><br/>"N" 
<br/><br/><label>ISBN: </label>"0-672-27350-0" 
<br/><br/><label>Subjects--Topical Terms: </label><br/>1. Telephone
<br/><br/><label>Subjects--Index Terms: </label>"Y" 
<br/><br/><label>LC Class. No.: </label>TK6162  / .B54