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systèmes irréguliers |
natural systems : 18 phrases in 10 subjects |
Electronics | 3 |
Environment | 4 |
Finances | 1 |
General | 1 |
Health care | 1 |
Industry | 2 |
Information technology | 2 |
Law | 1 |
Natural resourses and wildlife conservation | 2 |
United Nations | 1 |