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extinction : 170 phrases in 29 subjects |
| Agriculture | 12 |
| Astronautics | 2 |
| Chemistry | 12 |
| Coal | 7 |
| Commerce | 2 |
| Communications | 1 |
| Customs | 1 |
| Earth sciences | 8 |
| Economy | 1 |
| Electronics | 23 |
| Energy industry | 1 |
| Environment | 9 |
| Finances | 1 |
| General | 12 |
| Health care | 1 |
| Industry | 4 |
| Information technology | 1 |
| Law | 6 |
| Life sciences | 1 |
| Materials science | 42 |
| Mechanic engineering | 1 |
| Medical | 2 |
| Microsoft | 1 |
| Natural resourses and wildlife conservation | 2 |
| Natural sciences | 1 |
| Patents | 2 |
| Physical sciences | 1 |
| Statistics | 1 |
| Transport | 12 |
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