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| твёрдое дно | |||
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sub-bottom : 39 phrases in 14 subjects |
| Acoustics | 1 |
| Caspian | 2 |
| Drilling | 12 |
| Fish farming pisciculture | 2 |
| Geology | 2 |
| Geophysics | 2 |
| Hydrology | 1 |
| Nautical | 2 |
| Oil / petroleum | 8 |
| Oil and gas | 1 |
| Oil and gas technology | 3 |
| Sakhalin | 1 |
| Sakhalin R | 1 |
| Technology | 1 |