Telephony & telegraphy A : an introduction to telephone and telegraph instruments and exchanges /
Wedi'i Gadw mewn:
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
London :
Oxford U.P,
1969.
|
| Pynciau: |
| Disgrifiad o'r Eitem: | Third ed. published in 1978 under title: Telephony and telegraphy. |
|---|---|
| Disgrifiad Corfforoll: | xv, 285 p. : illus ; 25 cm. |
| Llyfryddiaeth: | Bibliography: p. [263]. |
| ISBN: | 0198593058 : |