File:NIOSH 3-1 Comp 1975.jpg

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DescriptionNIOSH 3-1 Comp 1975.jpg	Русский: Диаграмма распределения уровней звукового давления по частотам для промышленных шумов, которые считались характерными для предприятий США
Date	1 September 1975
Source	Fig. 1 in: List of Personal Hearing Protectors and Attenuation Data, DHEW (NIOSH) Publication No. 76-120, NTIS Accession No.: PB 267461, 1975
Author	Patricia Kroes, Roy Fleming, Barry Lempert (National Institute for Occupational Safety and Health)

National Institute for Occupational Safety and Health, 4676 Columbia Parkway, Cincinnati, Ohio, 45226

	This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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