Construcciýn de sistema de alcantarillado sanitario consistente en la instalaciýn de 1864 m.l. tuberýa de 20 cms de diýmetro con junta hermýtica, 29 pozos de visita tipo comýn y 34 descargas domiciliarias, en la localidad de Rancho Blanco, municipio de Allende, en el Estado de Chihuahua

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