Brown, J.  <br/><br/>
Telecommunications / 
J. Brown , E. V.D. Glazier ;  editor H.M. Barlow 
 - london :  Chap and Hall,  1964[1969] 
 - xi, 380 p. :  ill. ;  22 cm 
 - Science at work .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems--Juvenile literature