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| desert soil | |||
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| desert soil | |||
| yermosols; aridisols (without mollic subgroups); desert and semidesert soils (with almost no organic matter) | |||
| sol désertique: 8 phrases in 4 subjects |
| Agriculture | 1 |
| Earth sciences | 2 |
| Natural resourses and wildlife conservation | 3 |
| Soil science | 2 |