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DEGRADATION DE L'ENVIRONNEMENT (16) |
DESERTIFICACION (16) |
DESERTIFICATION (16) |
DETERIORO AMBIENTAL (16) |
ENVIRONMENTAL DEGRADATION (16) |
DROUGHT CONTROL (8) |
LUCHA CONTRA LA SEQUIA (8) |
LUTTE CONTRE LA SECHERESSE (8) |
DEGRADACION DE TIERRAS (3) |
DEVASTATION DES TERRES (3) |