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

 - New York:  Hart Publishing Company, Inc,  1968. 
 - vii,413p.   ;ill.  29cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone<br/>Telegraphy
<br/><br/><label>LC Class. No.: </label>QTO TK6161.J56