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cono maschio | |||
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alette curve |
spiraal : 30 phrases in 12 subjects |
Agriculture | 1 |
Chemistry | 5 |
Coal | 1 |
Construction | 2 |
Earth sciences | 1 |
Electronics | 3 |
Industry | 1 |
Materials science | 2 |
Mechanic engineering | 3 |
Medical | 9 |
Technology | 1 |
Transport | 1 |