Telephony : a detailed exposition of the telephone exchange systems of the British Post Office. Vol. 1
Atkinson, J.
Telephony : a detailed exposition of the telephone exchange systems of the British Post Office. Vol. 1 (Book) - London Sir Isaac Pitman 1948 - 514 p. 26 cm.
Telephone--Great Britain
621.395 ATK / 10615
Telephony : a detailed exposition of the telephone exchange systems of the British Post Office. Vol. 1 (Book) - London Sir Isaac Pitman 1948 - 514 p. 26 cm.
Telephone--Great Britain
621.395 ATK / 10615