Bigelow, Stephen J. , <br/><br/>
Understanding telephone electronics / 
Stephen J. Bigelow, Joseph J. Carr and Stephen W. Winder. 
 - 4th ed. 
<br/><br/> Rev. edition of : Understanding telephone electronics, 3rd edition 1997 
<br/><br/><label>ISBN: </label>0750671750 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone.
<br/><br/><label>LC Class. No.: </label>TK6162   / .B53 2001