Marshall, Charles A. <br/><br/>
Communications /  
Charles A. Marshal. 
 - London :    Phoenix House,    1960. 
 - 64 p. :    ill. ;    23 cm. 
 - Progress of science series .
<br/><br/><label>Subjects--Topical Terms: </label><br/> Telecommunication -- Juvenile literature.
<br/><br/><label>Dewey Class. No.: </label>621.384 MAR