TY - BOOK AU - Atkinson, J TI - Telephony V.2: Automatic exchange systems ( A detailed exposition of the telephone exchange& system of the British Post Office) U1 - 621.382 ATK.2;1 `R' PY - 1950/// PB - London : Sir Isaac Pitman KW - Telephony,V.2:,Automatic,exchange,systems ER -