Telephony
Subtitle: a detailed exposition of the telephone exchange systems of the British Post Office
By: [by] Herbert & Procter ; [in 2 vols].
Contributors: Procter, William Skirrow.; Atkinson, James.
Edition: New ed / by J. Atkinson.
Publisher: Pitman
Published: 1972
Place of publication: London
Language: eng
Notes: Previous ed. 1938.