The electro-magnetic telegraph. A defence against the injurious deductions drawn from the deposition of Prof. Joseph Henry
Wedi'i Gadw mewn:
| OCLC: | 6774123 |
|---|---|
| Prif Awdur: | |
| Iaith: | English |
| Cyhoeddwyd: |
[Paris,
Printed by A. Chaix,
1858]
|
| Cyfres: | American Culture Series II.
r.389, item 007. |
| Pynciau: | |
| Fformat: | Monograph Microform Note that CRL will digitize material from the collection when copyright allows. |