/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: hperalesvela https://cdn.slidesharecdn.com/profile-photo-hperalesvela-48x48.jpg?cb=1548288714 Biólogo, Profesor de la UNAM, Cristiano-Metodista,