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способ добычи : 50 phrases in 16 subjects |
| Business | 1 |
| Construction | 1 |
| Ecology | 4 |
| Economics | 1 |
| Energy industry | 1 |
| Finances | 1 |
| General | 4 |
| Geology | 1 |
| Gold mining | 1 |
| Mining | 14 |
| Oil / petroleum | 5 |
| Oil and gas | 3 |
| Oil and gas technology | 1 |
| Production | 4 |
| Soviet | 1 |
| Technology | 7 |