title: Possible long-term changes in biologically active ultraviolet radiation reaching the ground.
authors.forename: J E
authors.initials: JE
authors.lastname: Frederick
authors.forename: D
authors.initials: D
authors.lastname: Lubin
mesh_terms: D001272:Atmosphere; D008433:Mathematics; D008962:Models, Theoretical; D010126:Ozone; D013472:Sunlight; D014466:Ultraviolet Rays
chemical_list: D010126:Ozone