Hearing conservation: industrial aspects in California.
D002140:California; D004430:Ear Protective Devices; D006309:Hearing; D006317:Hearing Loss, Noise-Induced; D006320:Hearing Tests; D006801:Humans; D007221:Industry; D009622:Noise / Q000009:adverse effects*; D009623:Noise, Occupational; D016272:Occupational Health
INDUSTRIAL HYGIENE; NOISE/injurious effects