Heliotherapy is the therapeutic use of what?
Solar Irradiation Total Solar Irradiance Sunlight Natural lighting Sun shiny Sunshine Sun's radiation Solar output Sunlit Solar irradiation Solar spectrum Sun light Solar Radiation Sun shine Sunshiny Uses of sunlight Sun radiation
sunshine sun shiny solar radiation total solar irradiance sunlight sun light sun shine solar spectrum sun s radiation solar output sunshiny sun radiation sunlit uses of sunlight solar irradiation natural lighting
sunlight
WikipediaEntity
Sunlight