File:THC 2003.902.021 E. H. Johnston Ozone Production.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	19:50, 17 December 2014		3,139 × 2,941 (10.89 MB)	commons>Mary Mark Ockerbloom	{{Photograph \|photographer = {{unknown}} \|title={{en\|1= E. H. Johnson Ozone Production }} \|description={{en\|1= E. H. Johnson Ozone Production }} \|depicted people = {{depicted person\|E. H. Johnson}} \|depicted place = Fixed Nitrogen Research Labora...

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