Appleyard Rollo <br/><br/>
Pioneers of electrical communication 

 -  1929 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>75521 
<br/><br/><label>Source: </label> 091/06-07, 27/09/2006, N R Book Distributors  Textual 
<br/><br/><label>Dewey Class. No.: </label>CwM5, F9