TY  - BOOK
AU  - Atkinson, J. 
TI  - Telephony : a detailed exposition of the telephone exchange systems of the British oost office
SN  - 0-273-43180-3
U1  - 621.382 
PY  - 1978///
CY  - London
PB  - Pitman
KW  - Communication engineering
KW  - Telecommunication
N1  - Includes index; V.1.General principles and manual exchange systems
ER  -