/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: RogelioInfanteMedina https://cdn.slidesharecdn.com/profile-photo-RogelioInfanteMedina-48x48.jpg?cb=1719688536 Ing. Químico, docente del SABES de Gto. e Instituto Tecnológico de León