DSpace Collection: http://repositoriodigital.ipn.mx/handle/123456789/19056 Mon, 20 Apr 2026 12:22:04 GMT 2026-04-20T12:22:04Z UPIIZ http://repositoriodigital.ipn.mx/handle/123456789/19382 Title: UPIIZ Authors: UPIIZ Tue, 08 Jul 2014 00:00:00 GMT http://repositoriodigital.ipn.mx/handle/123456789/19382 2014-07-08T00:00:00Z Secretaría Académica http://repositoriodigital.ipn.mx/handle/123456789/19381 Title: Secretaría Académica Authors: Secretaría Académica Tue, 08 Jul 2014 00:00:00 GMT http://repositoriodigital.ipn.mx/handle/123456789/19381 2014-07-08T00:00:00Z