NIOSH Lc-La Compendium 1975+.jpg
Patricia Kroes, Roy Fleming, Barry Lempert (National Institute for Occupational Safety and Health)
en
NIOSH Lc La Compendium 1975+, Occupational safety and health, Hearing, Noise
commons
ja
NIOSH Lc La Compendium 1975+、労働安全衛生、聴覚、騒音
commons_translated
background noise attenuator attenuated compendium noise hearer auditory perception hearing aural