File:1924 The Hygienic Conditions of Illumination in Certain Post Offices, Especially Relating to Visual Defects and Efficiency.pdf
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Summary
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English: Studies in Illumination: The Hygienic Conditions of Illumination in Certain Post Offices, Especially Relating to Visual Defects and Efficiency |
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| Source | https://ntrl.ntis.gov/NTRL/dashboard/searchResults/titleDetail/ADA366872.xhtml |
| Author | U.S. Public Health Service Division of Industrial Hygiene |
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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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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 04:55, 14 September 2020 |  | 1,275 × 1,647, 126 pages (14.66 MB) | John P. Sadowski (NIOSH) | Uploaded a work by U.S. Public Health Service Division of Industrial Hygiene from https://ntrl.ntis.gov/NTRL/dashboard/searchResults/titleDetail/.xhtml with UploadWizard |
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