title: [Tests of Soviet-made "Beryushi" ear-protective devices].
mesh_terms: D000293:Adolescent; D000328:Adult; D004430:Ear Protective Devices; D006311:Hearing Disorders / Q000517:prevention & control*; D006801:Humans; D008297:Male; D008906:Mining; D009784:Occupational Diseases / Q000517:prevention & control*; D011482:Protective Devices; D014586:USSR
vernacular_title: Zkusenosti s chránici sluchu Bĕrjusi sovĕtské výroby