The rise and extension of submarine telegraphy.
Wedi'i Gadw mewn:
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
New York,
Arno Press,
1974.
|
| Cyfres: | Telecommunications (New York, 1974-
|
| Pynciau: |
| Disgrifiad o'r Eitem: | Reprint of the 1891 ed. published by J. S. Virtue, London. |
|---|---|
| Disgrifiad Corfforoll: | xiii, 390 p. illus. 24 cm. |
| ISBN: | 0405060580 |