/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: anis_sg https://cdn.slidesharecdn.com/profile-photo-anis_sg-48x48.jpg?cb=1637501962 je tire mes conclusions en me basant sur l'observation et l'expérimentation.