/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: nancyalopez733 https://cdn.slidesharecdn.com/profile-photo-nancyalopez733-48x48.jpg?cb=1549455146 Lo que sabemos es una gota de agua; lo que ignoramos es el océano...Isaac Newton