[The use of ear protectors by ore breakers in uranium mines].
D003604:Czechoslovakia; D004430:Ear Protective Devices / Q000592:standards; D004781:Environmental Exposure; D006801:Humans; D008906:Mining; D009622:Noise; D009790:Occupations; D011482:Protective Devices / Q000592:standards; D014501:Uranium
D014501:Uranium
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