Herbert, Thomas Ernest.
Telephony : a detailed exposition of the telephone exchange systems of the British post office / by J. Atkinson. - London, I. Pitman, 1972 - various pages : illus. ; 26 cm.
Includes index.
(hbk.)
49017480
Telephone.
Telecommunication.
TK6161 / .H572
621.385 / ATK
Telephony : a detailed exposition of the telephone exchange systems of the British post office / by J. Atkinson. - London, I. Pitman, 1972 - various pages : illus. ; 26 cm.
Includes index.
(hbk.)
49017480
Telephone.
Telecommunication.
TK6161 / .H572
621.385 / ATK