Jolley , E. H.  <br/><br/>
Introduction to telephony and telegraphy  

 - Allahabad   Wheeler Publishing   1994 
 - x, 413 p.  : ill.  ; 23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>8185614369 (hb) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone --Telephone services --Electric telegraph --Circuit components --Telephone instruments --Switching systems --Transmission methods --Telegraph --FEAS 
<br/><br/><label>Dewey Class. No.: </label>621.385  / JOL