Talley, David <br/><br/>
Basic electronic switching for telephone systems / 
David Talley 
 - 2nd.ed. 
 - Indianapolis  Hayden Books  1987 
 - 312p.  ill.  24cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>081262409602  RM15.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecomunications--Technological