DSpace Collection: http://repositoriodigital.ipn.mx/handle/123456789/574 Sat, 18 Apr 2026 14:53:41 GMT 2026-04-18T14:53:41Z Biol. Jaime Nava Velázquez http://repositoriodigital.ipn.mx/handle/123456789/15216 Title: Biol. Jaime Nava Velázquez Description: Fotografía Wed, 17 Apr 2013 00:00:00 GMT http://repositoriodigital.ipn.mx/handle/123456789/15216 2013-04-17T00:00:00Z IBQ. Héctor Archivaldo Vela Álvarez http://repositoriodigital.ipn.mx/handle/123456789/15215 Title: IBQ. Héctor Archivaldo Vela Álvarez Description: Fotografía Wed, 17 Apr 2013 00:00:00 GMT http://repositoriodigital.ipn.mx/handle/123456789/15215 2013-04-17T00:00:00Z Ing. Enrique Ortega Rocha Director 1986-1989 http://repositoriodigital.ipn.mx/handle/123456789/15214 Title: Ing. Enrique Ortega Rocha Director 1986-1989 Description: Fotografía Wed, 17 Apr 2013 00:00:00 GMT http://repositoriodigital.ipn.mx/handle/123456789/15214 2013-04-17T00:00:00Z M. en C. Enrique Lavín Montoya Director 1991-2001 http://repositoriodigital.ipn.mx/handle/123456789/15213 Title: M. en C. Enrique Lavín Montoya Director 1991-2001 Description: Fotografía Wed, 17 Apr 2013 00:00:00 GMT http://repositoriodigital.ipn.mx/handle/123456789/15213 2013-04-17T00:00:00Z