File:Фиг. 2-3. Руководство NIOSH по респираторной защите в промышленности 1987г.jpg
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![File:Фиг. 2-3. Руководство NIOSH по респираторной защите в промышленности 1987г.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/8/8f/%D0%A4%D0%B8%D0%B3._2-3._%D0%A0%D1%83%D0%BA%D0%BE%D0%B2%D0%BE%D0%B4%D1%81%D1%82%D0%B2%D0%BE_NIOSH_%D0%BF%D0%BE_%D1%80%D0%B5%D1%81%D0%BF%D0%B8%D1%80%D0%B0%D1%82%D0%BE%D1%80%D0%BD%D0%BE%D0%B9_%D0%B7%D0%B0%D1%89%D0%B8%D1%82%D0%B5_%D0%B2_%D0%BF%D1%80%D0%BE%D0%BC%D1%8B%D1%88%D0%BB%D0%B5%D0%BD%D0%BD%D0%BE%D1%81%D1%82%D0%B8_1987%D0%B3.jpg/498px-%D0%A4%D0%B8%D0%B3._2-3._%D0%A0%D1%83%D0%BA%D0%BE%D0%B2%D0%BE%D0%B4%D1%81%D1%82%D0%B2%D0%BE_NIOSH_%D0%BF%D0%BE_%D1%80%D0%B5%D1%81%D0%BF%D0%B8%D1%80%D0%B0%D1%82%D0%BE%D1%80%D0%BD%D0%BE%D0%B9_%D0%B7%D0%B0%D1%89%D0%B8%D1%82%D0%B5_%D0%B2_%D0%BF%D1%80%D0%BE%D0%BC%D1%8B%D1%88%D0%BB%D0%B5%D0%BD%D0%BD%D0%BE%D1%81%D1%82%D0%B8_1987%D0%B3.jpg?20140318131850)
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