Biswas, Nripendra N. <br/><br/>
Principles and telephony / 
Nripendra N. Biswas. 
 - 1st ed. 
 - Bangalore :  UBS Publishers Distributors Ltd.,  2000 
 - 138 p.  : tables, ill. ;  22 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>818527309X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Manual Telephony <br/>Traffic and Trucking 
<br/><br/><label>Dewey Class. No.: </label>621.385  / BIP