Electrical Telegraph Systems Worldwide.
| Autor: | Huurdeman, Anton A. |
|---|---|
| Zdroj: | Worldwide History of Telecommunications; 2003, p91-146, 56p |
| Databáze: | Complementary Index |
| Externí odkaz: |
|
| Autor: | Huurdeman, Anton A. |
|---|---|
| Zdroj: | Worldwide History of Telecommunications; 2003, p91-146, 56p |
| Databáze: | Complementary Index |
| Externí odkaz: |
|