Jolley, E. H <br/><br/>
Introduction to telephony and telegraphy / 
Ernest Harris Jolley 
 - Delhi:  a. h. wheeler & co., private Lid.,  c1987. 
 - x,413p.:  table, figs.;  24 cm. 
<br/><br/> Includes Index. 
<br/><br/>
<br/><br/><br/>english 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone<br/>Telegraph<br/>Telecommunication
<br/><br/><label>Dewey Class. No.: </label>621.385/JOI