Presentation+de+coutumes

Presentation: https://docs.google.com/a/presentationhs.org/presentation/d/1Vs9swKqugV_XyayCyPewOR5A2dPmgMEXqIQrTTgzWls/edit#slide=id.g1d1c5a09f_046

L'article: https://docs.google.com/a/presentationhs.org/document/d/1ecWOh7-7wqBoy0ucHqfLL8x1oJmyDkN8X06574TMD8g/edit

La video http://www.youtube.com/watch?v=0MYnqDIzHGI