Bigelow, Stephen J.    <br/><br/>
Understanding telephone electronics /  
Stephen J. Bigelow    
 - 3rd.ed.    
 - Boston :  Newnes,   1997.    
 - v,367p.:   ill.;   24 cm.    
<br/><br/><label>ISBN: </label>0750699442    
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone