The telephone and the exchange /
Povey, P. J.
The telephone and the exchange / P. J. Povey. - Revision edition. - London : Pitman Pub., 1979. - 124 pages : illustrations ; 25 cm.
A revised edition of the book published in Great Britain by The Post Office, 1974.
0273013556
Telephone.
Telephone systems.
The telephone and the exchange / P. J. Povey. - Revision edition. - London : Pitman Pub., 1979. - 124 pages : illustrations ; 25 cm.
A revised edition of the book published in Great Britain by The Post Office, 1974.
0273013556
Telephone.
Telephone systems.