[Measures for relieving the overwork of students in the People's Republic of Bulgaria].
D002031:Bulgaria; D002648:Child; D003479:Curriculum; D005221:Fatigue / Q000517:prevention & control*; D006801:Humans; D005222:Mental Fatigue / Q000517:prevention & control*; D012572:School Health Services; D014937:Work
Meropriiatiia dlia razgruzki uchashchikhsia v Narodnoĭ Respublike Bolgarii.