[Long-term observations on the auditory acuity of workers in a nosiy environment].
D000328:Adult; D001299:Audiometry; D004781:Environmental Exposure; D006317:Hearing Loss, Noise-Induced / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000209:etiology*; D013997:Time Factors