Das, Apurba <br/><br/>
Line communication system : telecommunication switching approach 
Apurba Das 
 - 2nd ed 
 - New Delhi  New Age international ( P) Limited, Publishers  2010 
 - xvii, 266p. ; 25 cm 
<br/><br/><label>ISBN: </label>9788122430882 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Line Communication
<br/><br/><label>Dewey Class. No.: </label>621.382 APU