[Hygienic evaluation of the intellectual work of schoolchildren at their lessons].
D000293:Adolescent; D006801:Humans; D008606:Mental Processes / Q000502:physiology*; D013315:Stress, Psychological / Q000503:physiopathology; D013334:Students; D013997:Time Factors; D014455:Ukraine
Ggienicheskaia otsenka umstvennoĭ raboty sckol'nikov na uroke.