Construcciýn de subcolector en calle Ponce de Leýn y priv. de J. J. Calvo de la Col. Valle de la Madrid sector, consistente en el suministro e instalaciýn de 227.60 m. de tuberýa PVC S-20 de 8" de diýmetro, en Cd. Chihuahua, Chih.

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