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| headspace: 19 phrases in 10 subjects |
| Chemistry | 2 |
| Earth sciences | 1 |
| Ecology | 2 |
| Food industry | 1 |
| Geology | 3 |
| Isolation | 1 |
| Oil / petroleum | 1 |
| Perfume | 1 |
| Technology | 6 |
| Water resources | 1 |
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