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    • Sequía, un problema de perspectiva y gestión 

      Velasco, Israel; Ochoa, Leonel; Gutiérrez, Carlos (El Colegio de Sonora, 2005-09-01)
      Since the beginning of history, drought and water scarcity have been decisive factors in human development; the big famines have caused entire populations mobilization, and in some cases their decadence and disappearance. ...