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aeronautical | radio navigation service
| radio navigation service | |
| transp. avia. | służba radionawigacji |
| aeronautical: 11 phrases in 6 subjects |
| Communications | 2 |
| General | 1 |
| Lighting other than cinema | 1 |
| Radio | 4 |
| Satellite communications | 1 |
| Transport | 2 |