DSpace Collection: Contratos http://repositoriodigital.ipn.mx/handle/123456789/23522 Contratos Sat, 18 Apr 2026 16:40:31 GMT 2026-04-18T16:40:31Z Modificatorios 2017 http://repositoriodigital.ipn.mx/handle/123456789/23646 Title: Modificatorios 2017 Authors: Raquel Torres Wed, 01 Nov 2017 00:00:00 GMT http://repositoriodigital.ipn.mx/handle/123456789/23646 2017-11-01T00:00:00Z Contratos Publicos 2017 http://repositoriodigital.ipn.mx/handle/123456789/23635 Title: Contratos Publicos 2017 Authors: Raquel Torres Tue, 07 Nov 2017 00:00:00 GMT http://repositoriodigital.ipn.mx/handle/123456789/23635 2017-11-07T00:00:00Z Contrato Publico http://repositoriodigital.ipn.mx/handle/123456789/23547 Title: Contrato Publico Authors: Torres, Raquel Mon, 13 Nov 2017 00:00:00 GMT http://repositoriodigital.ipn.mx/handle/123456789/23547 2017-11-13T00:00:00Z