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| superficie activa | |||
| active surface: 37 phrases in 10 subjects |
| Chemistry | 15 |
| Earth sciences | 1 |
| Electrochemistry | 1 |
| Environment | 6 |
| Food service and catering | 4 |
| Industry | 5 |
| Life sciences | 1 |
| Medical | 1 |
| Metallurgy | 2 |
| Textile industry | 1 |
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