Telephone operating instructions /  

 - iv, 72p. ;  24 cm. 
<br/><br/> Includes appendix and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trade, communications and transportation
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Telephone.<br/>Telephone services.<br/>Telegraph.
<br/><br/><label>Dewey Class. No.: </label>384.64  / C734