Earth-return telegraph (Q96376869)
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telegraphy transmission method
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Earth-return telegraph |
telegraphy transmission method |
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Wikipedia(4 entries)
- enwiki Earth-return telegraph
- eswiki Telégrafo de retorno a tierra
- fawiki تلگراف زمینبرگشتی
- frwiki Télégraphe avec retour par la terre