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| Country/geo | Colonial Nigeria, incl. British Cameroons |
| Subject | Airmail |
| superordinated | Postal services, telegraphy and telephony |
| Signature | C60 : n34 Sm3 |
| URI | http://purl.org/pressemappe20/folder/sh/141409,145665 |
| ID | sh/141409,145665 |