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| upper air observations | |||
| aerological observations; upper-air observations | |||
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| upper air observation; aerological observation | |||
| аэрологические наблюдения: 6 phrases in 5 subjects |
| Ecology | 1 |
| Makarov | 1 |
| Meteorology | 1 |
| Nautical | 1 |
| Physics | 2 |
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