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courbe de niveau : 112 phrases in 17 subjects |
Agriculture | 43 |
Communications | 2 |
Construction | 4 |
Earth sciences | 6 |
Environment | 4 |
General | 1 |
Hydrology | 1 |
Industry | 1 |
Life sciences | 14 |
Mathematics | 1 |
Natural resourses and wildlife conservation | 2 |
Soil science | 1 |
Technology | 18 |
Transport | 3 |
Travel | 1 |
United Nations | 1 |
Water resources | 9 |