Report of the field representative.
D006309:Hearing; D006311:Hearing Disorders / Q000517:prevention & control*; D006320:Hearing Tests; D006801:Humans; D009622:Noise / Q000009:adverse effects*; D016272:Occupational Health; D013016:Sound
HEARING DISORDERS/prevention and control; INDUSTRIAL HYGIENE; NOISE/injurious effects