Atkinson, J.
Telephony : a detailed exposition of the telephone exchange systems of the British post office / J. Atkinson. - London : Pitman Publishing, 1948 [reprinted 1970]. - xii, 509 p. : ill. ; 26 cm. - Vol. 1.
Includes bibliographies and index.
0273431803
Telephone--Great Britain.
621.385
Telephony : a detailed exposition of the telephone exchange systems of the British post office / J. Atkinson. - London : Pitman Publishing, 1948 [reprinted 1970]. - xii, 509 p. : ill. ; 26 cm. - Vol. 1.
Includes bibliographies and index.
0273431803
Telephone--Great Britain.
621.385