[EFFECT OF AN EASIER DAILY SCHOOL SCHEDULE ON FATIGUE OF STUDENTS].
D005221:Fatigue; D006801:Humans; D012572:School Health Services; D012574:Schools; D013334:Students; D014586:USSR
FATIGUE; SCHOOL HEALTH; USSR
VVEDENIE UCHEBNOGO REZHIMA S OBLEGCHENNYM DNEM NA UTOMLENIE SHKOL'NIKOV.