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| effective space | |||
| эффективное пространство: 11 phrases in 10 subjects |
| Automobiles | 1 |
| Geology | 1 |
| Geophysics | 1 |
| Mass media | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 2 |
| Oil and gas technology | 1 |
| Programming | 1 |
| Technology | 1 |
| Water resources | 1 |
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