Report on duty trip to Saudi Arabia, 22 to 27 July 1968.
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| Format: | Texto biblioteca |
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1968
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| Subjects: | GROUNDWATER, WATER DRILLING, WELLS, WATER MANAGEMENT, EAU SOUTERRAINE, FORAGE D'EAU, PUITS, AGUAS SUBTERRANEAS, PERFORACION DE POZOS, POZOS, GESTION DES EAUX, ORDENACION DE AGUAS, |
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