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| masa atmosférica; masa de aire | |||
| air mass: 22 phrases in 9 subjects |
| Chemistry | 1 |
| Earth sciences | 1 |
| Environment | 1 |
| General | 1 |
| Hobbies and pastimes | 1 |
| Life sciences | 4 |
| Lighting other than cinema | 1 |
| Meteorology | 9 |
| Natural sciences | 3 |
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