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| non-exploité; vierge | |||
| unworked: 25 phrases in 11 subjects |
| Agriculture | 1 |
| Chemistry | 3 |
| Coal | 1 |
| Finances | 1 |
| General | 6 |
| Industry | 3 |
| Law | 2 |
| Metallurgy | 4 |
| Municipal planning | 1 |
| Patents | 2 |
| Technology | 1 |
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