Brown, Ronald. <br/><br/>
Telecommunications / 
Ronald Brown. 
 - United States :  Doubleday & Company, Inc.,  1970. 
 - 189 p. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems.
<br/><br/><label>Dewey Class. No.: </label>384  / BRT 1970