Ozone depletion--is the sky falling?
Welch
K L
KL
D000397:Air Pollution; D001272:Atmosphere; D017402:Chlorofluorocarbons; D006801:Humans; D010126:Ozone; D012878:Skin Neoplasms / Q000453:epidemiology / Q000209:etiology; D014466:Ultraviolet Rays / Q000009:adverse effects
D017402:Chlorofluorocarbons; D010126:Ozone