TY  - BOOK
AU  - Cohen, Bertram S.
AU  - Angwin, A. Stanley
AU  - Baldarin, F. G. C.
TI  - A Handbook of Telecommunication Telephony and Telegraphy Over Wires 
U1  - 621.3802 
PY  - 1946///
CY  - London : 
PB  - Pitman Press, 
KW  - Telecommunication Handbooks Manuals
N1  - NN
ER  -