SERVICIO DE MEDIOS COMPLEMENTARIOS DE COMUNICACIÓN(PUBLICIDAD EN AUTOBUSES) PARA LA DIFUSIÓN DE MENSAJES PUBLITARIOS DE LAS ACCCIONES INSTITUCIONALES DE LA SECRETARÍA DE HACIENDA Y CRÉDITO PÚBLICO Y DEL SERVICIO DE ADMINISTRACIÓN TRIBUTARIA A NIVEL NACIONAL PARA EL EJERCICIO FISCAL 2006.ES UN CONTRATO ABIERTO

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