File:Halfmask air-line drawing page 46.png

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English: Illustration from page 46 of NIOSH Guidelines for TB.
Source NIOSH TB Guide
Author NIOSH
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This image is a work of the National Institute for Occupational Safety and Health, part of the Centers for Disease Control and Prevention in the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.

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Other versions Complete scan: File:Niosh tb guidelines.pdf

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current02:57, 6 August 2024Thumbnail for version as of 02:57, 6 August 2024926 × 1,180 (624 KB)RandomstaplersUpload file with Wikisource File Uploader
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