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| УВБ; уровень верхнего бьефа | |||
| уровень воды в верхнем бьефе | |||
| upstream level: 5 phrases in 5 subjects |
| Agriculture | 1 |
| Hydraulic engineering | 1 |
| Hydrology | 1 |
| Makarov | 1 |
| Water resources | 1 |
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