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| osservazione della terra | |||
| observation de la terre: 33 phrases in 11 subjects |
| Astronautics | 2 |
| Communications | 4 |
| Earth sciences | 1 |
| Electronics | 1 |
| Environment | 8 |
| Life sciences | 5 |
| Name of organization | 1 |
| Natural sciences | 3 |
| Obsolete / dated | 6 |
| Scientific | 1 |
| Technology | 1 |