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| PUP | |||
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Plutonium : 82 phrases in 12 subjects |
| Chemistry | 19 |
| Earth sciences | 6 |
| Electronics | 6 |
| Energy industry | 3 |
| Environment | 6 |
| General | 26 |
| Measuring instruments | 2 |
| Nuclear and fusion power | 1 |
| Nuclear physics | 6 |
| Research and development | 1 |
| Technology | 1 |
| Transport | 5 |