[Hygienic evaluation and practic I use of ultraviolet radiations of the sun and the sky in the North Pole].
D006801:Humans; D014466:Ultraviolet Rays
ULTRAVIOLET RAYS
Gigienicheskaia otsenka i prakticheskoe ispol'zovanie ul'trafioletovoi radiatsii solntsa i nebosvoda v raione Severnogo poliusa.