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máquina de escribir : 22 phrases in 9 subjects |
| Chemistry | 1 |
| General | 4 |
| Industry | 5 |
| Information technology | 2 |
| Mechanic engineering | 2 |
| Patents | 5 |
| Social science | 1 |
| Technology | 1 |
| Textile industry | 1 |
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