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| bottom material (sediment movement) | |||
| донный материал: 8 phrases in 7 subjects |
| Ecology | 1 |
| Geography | 1 |
| Geology | 1 |
| Hydrobiology | 1 |
| Makarov | 2 |
| Oil / petroleum | 1 |
| Oilfields | 1 |
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