[Organization and carrying out of extracurricular measures on the hygienic education of schoolchildren].
D002648:Child; D006266:Health Education; D006801:Humans; D013663:Teaching / Q000379:methods; D014586:USSR
Organizatsiia i provedenie vneklassnykh meropriiatiĭ po gigienicheskomu vospitaniu shkol'nikov.