Biswas, N. N. <br/><br/>
Principles Of Telephony 

 - 1st 
 - New Delhi  UBS Publishers Distributors Ltd  1998 
 - 138  Yes  21cm 
<br/><br/> Telephone, Principle 
<br/><br/>
<br/><br/><label>ISBN: </label>Nil 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone
<br/><br/><label>Dewey Class. No.: </label>384.6/B621p