/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: preciosaral https://cdn.slidesharecdn.com/profile-photo-preciosaral-48x48.jpg?cb=1523185243 Para que repetir los errores antiguos habiendo tantos errores nuevos que cometer? Bertrand Russel...