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Replaced DOD Chem Warfare link with archive link
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Agency for Toxic Substances and Disease Registry: [https://www.atsdr.cdc.gov/toxguides/toxguide-92.pdf ToxGuide for Selenium]
Agency for Toxic Substances and Disease Registry: [https://www.atsdr.cdc.gov/toxguides/toxguide-92.pdf ToxGuide for Selenium]
−Division 9 of NRDC: [https://apps.dtic.mil/sti/pdfs/AD0234270.pdf Chemical Warfare Agents and Related Chemical Problems, Parts I-II, Chapter 11] (1946)
+Division 9 of NRDC: [https://web.archive.org/web/20220504131238/https://apps.dtic.mil/sti/pdfs/AD0234270.pdf Chemical Warfare Agents and Related Chemical Problems, Parts I-II, Chapter 11] (1946)
==References==
==References==