/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: sandramadariagaherrera https://cdn.slidesharecdn.com/profile-photo-sandramadariagaherrera-48x48.jpg?cb=1529941242 Académica, Doctor en Ciencias, con mención en Química.