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ARID ZONES (9) |
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SAND DUNES (3) |
CLIMATE CHANGE (2) |
DROUGHT (2) |
ECOLOGICAL RESEARCH (2) |
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ARID ZONES (9) |
DESERTIFICATION (9) |
ECOSYSTEMS (9) |
ENVIRONMENTAL DEGRADATION (9) |
LAND DEGRADATION (9) |
SAND DUNES (3) |
CLIMATE CHANGE (2) |
DROUGHT (2) |
ECOLOGICAL RESEARCH (2) |
FARMS (2) |