/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: yansaney https://cdn.slidesharecdn.com/profile-photo-yansaney-48x48.jpg?cb=1523494831 La précipitation et la prevention sont des causes graves de l´erreur ( Albert Einstein )