/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: prepana https://cdn.slidesharecdn.com/profile-photo-prepana-48x48.jpg?cb=1522945230 Imparto clases en la licenciatura de Ingeniería Ambiental prepana14@prodigy.net.mx