/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: chomissaavedra https://cdn.slidesharecdn.com/profile-photo-chomissaavedra-48x48.jpg?cb=1523154569 "Los conceptos y principios fundamentales de la ciencia son invenciones libres del espíritu humano". - Albert Einstein