Wells, Robert,  1913- <br/><br/>
Messages, men and miles :  electronic communcations, how they work / 
by Robert Wells 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  c1958 
 - 120 p. :  ill. ;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> USD 02.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication--Juvenile literature<br/>Electronics--Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>621.38