[About skiing without a helmet and the principles of precaution].
jeanyves.nau@gmail.com
Jean-Yves
JY
Nau
D000056:Accident Prevention; D006260:Head Protective Devices / Q000592:standards*; D006801:Humans; D012449:Safety; D012865:Skiing / Q000592:standards*
Du ski sans casque et du principe de précaution.