Laurent Espitallier · @frenchhope
448 followers · 11388 posts · Server framapiaf.orgThe Astounding Physics of N95 Masks - YouTube https://www.youtube.com/watch?v=eAdanPfQdCA #physique #masque_de_protection #masque_ffp2 #masque_n95 #ffp2 #n95 #1st_revue #2nd_frm
#2nd_frm #1st_revue #n95 #FFP2 #masque_n95 #masque_ffp2 #masque_de_protection #physique
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