[Characteristics of noise in different branches of industry and efficacy of attenuating it using noise-proof headphones].
D004430:Ear Protective Devices; D006801:Humans; D009622:Noise / Q000517:prevention & control*; D009623:Noise, Occupational / Q000517:prevention & control*; D011482:Protective Devices
Kharakteristika shuma v razlichnykh otrasliakh promyshlennosti i éffektivnost' ego oslableniia protivoshumnymi naushnikami.