Davies, Eryl <br/><br/>
Telecommunications  a technology for change 
Eryl Davies 
 - London  H.M.S.O.  1983 
 - 60 p.  ill. (some col.), facsims., maps (some col.), ports.  20x21cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems--History
<br/><br/><label>Dewey Class. No.: </label>621.38  / 09