Preece W H <br/><br/>
Telegraphy 

 - London  Longmans Green UK        1919 
 - 414p.  cm. 
<br/><br/><label>Standard No.: </label>25881 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> ENGINEERING<br/>ELECTRICAL ENGINEERING
<br/><br/><label>Dewey Class. No.: </label>D65,47, E9