Atkinson, J.
Telephony : a detailed exposition of the telephone exchange systems of the British post office / by J. Atkinson; A new ed. of Telephony [by] Herbert & Procter. - London : Sir Isaac Pitman & Sons Ltd., 1950 [reprinted 1968]. - V. 2, xii, 873 p. : ill. ; 26 cm.
Includes bibliographical references and index.
Telephone--Great Britain.
621.385
Telephony : a detailed exposition of the telephone exchange systems of the British post office / by J. Atkinson; A new ed. of Telephony [by] Herbert & Procter. - London : Sir Isaac Pitman & Sons Ltd., 1950 [reprinted 1968]. - V. 2, xii, 873 p. : ill. ; 26 cm.
Includes bibliographical references and index.
Telephone--Great Britain.
621.385