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| beta radioactive material; beta active material; ß-radioactive material; ß-active material; beta radioactivity; ß-radioactivity (property); beta activity; ß-activity | |||
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activité ß : 9 phrases in 5 subjects |
| Finances | 1 |
| Fish farming pisciculture | 1 |
| General | 3 |
| Nuclear physics | 3 |
| Research and development | 1 |
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