TY  - BOOK
AU  - Atkinson,J.
TI  - Telephony: a detailed exposition of the telephone exchange systems of the British post office 
SN  - 0273431803
U1  - 621.385 
PY  - 1948/// [reprinted 1970]
CY  - London
PB  - Pitman Publishing
KW  - Telephone
KW  - Great Britain
N1  - Includes bibliographies and index
ER  -