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optel register; register A |
registro A: 32 phrases in 13 subjects |
Chemistry | 2 |
Communications | 2 |
Economy | 2 |
Electronics | 2 |
Food industry | 1 |
General | 2 |
Information technology | 2 |
Law | 7 |
Materials science | 1 |
Metallurgy | 2 |
Microsoft | 2 |
Patents | 6 |
Social science | 1 |