pdf British Dials Popular

Published on 28 October 2009 By Anonymous 671 downloads

Source:

TELEPHONY
A DETAILED EXPOSITION OF THE TELEPHONE SYSTEM OF THE BRITISH POST OFFICE
BY T. E. HERBERT, M.I.E.E. FORMER SUPERINTENDING ENGINEER, G.P.O.
AND
W. S. PROCTER, A.M.I.E.E. REGIONAL ENGINEER POST OFFICE ENGINEERING DEPT.

First Edition?? 1938
Reprinted? ? ?1938
"?????????????????1939
" ????????????????1940
"?????????????????1941
"?????????????????1943