Problemes de l'eau et de la secheresse dans la zone Sahelienne du Tchad
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Format: | Texto biblioteca |
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1973
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Subjects: | DROUGHT, WATER RESOURCES, WATER MANAGEMENT, ESTIMATED COSTS, EQUIPMENT, COSTS, DRILLING EQUIPMENT, WELLS, WATER DRILLING, RANGELANDS, SECHERESSE, RESSOURCE EN EAU, SEQUIA, RECURSOS HIDRICOS, GESTION DES EAUX, COUT ESTIME, MATERIEL, COUT, MATERIEL DE FORAGE, PUITS, FORAGE D'EAU, PARCOURS, ORDENACION DE AGUAS, COSTO ESTIMADO, EQUIPO, COSTOS, MATERIAL DE PERFORACION, POZOS, PERFORACION DE POZOS, TIERRAS DE PASTOS, |
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