File:1924 The Hygienic Conditions of Illumination in Certain Post Offices, Especially Relating to Visual Defects and Efficiency.pdf
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[edit]Description1924 The Hygienic Conditions of Illumination in Certain Post Offices, Especially Relating to Visual Defects and Efficiency.pdf |
English: Studies in Illumination: The Hygienic Conditions of Illumination in Certain Post Offices, Especially Relating to Visual Defects and Efficiency |
Date | |
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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[edit]Public domainPublic domainfalsefalse |
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current | 04:55, 14 September 2020 | ![]() | 1,275 × 1,647, 126 pages (14.66 MB) | John P. Sadowski (NIOSH) (talk | contribs) | 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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File change date and time | 22:34, 22 April 2009 |
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Date and time of digitizing | 09:16, 3 November 2001 |
Date metadata was last modified | 22:34, 22 April 2009 |
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Version of PDF format | 1.3 |