Elaboraciýn de bases (Estudios preliminares en Balzapote y muelles existentes, rutas de acarreos, elaboraciýn de catýlogo de conceptos, especificaciones particulares, nýmeros generadores e informe final de escolleras y dragado de construcciýn) )para dragado de construcciýn y escollera, para la ampliaciýn natural del Puerto de Veracruz en la zona Norte

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