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| Sys. no. | 000758626 |
|---|---|
| Topical Term | Telegraph |
| טלגרף | |
| S.F. Topical Term | Electric telegraph |
| Postal telegraph | |
| Telegrams | |
| S.A. Topical Term | Ciphers |
| Communication and traffic | |
| Telecommunication | |
| Alma MMS ID | 987007565825905171 |