File:NIOSH шум фиг14-41+.jpg

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Русский: Иллюстрация к переводу технического отчёта NIOSH по изучению ослабления шума у СИЗ органа слуха на заводах у рабочих см. текст перевода PDF
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https://ntrl.ntis.gov/NTRL/dashboard/searchResults/titleDetail/PB299319.xhtml A field investigation of noise reduction afforded by insert-type hearing protectors

DHEW (NIOSH) Publication No. 79-115
Author Edwards R.G., Hauser W.P., Moiseev N.A., Broderson A.B., Green W.W., Lempert B.L.

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