[On the possible hazards of the use of freon 12 (dichlorodifluoromethane].
D000059:Accidents; D000060:Accidents, Aviation; D001237:Asphyxia; D001359:Aviation; D005617:Chlorofluorocarbons, Methane; D006219:Halogens; D006801:Humans
D005617:Chlorofluorocarbons, Methane; D006219:Halogens; C007782:dichlorodifluoromethane
ACCIDENTS, AVIATION; ASPHYXIA; HALOGENS