File:Nitrogen determination apparatus, part of research conducted during World War II by the Tennessee Valley Authority and the University of Tennessee, 1942.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:13, 20 February 2024 | 706 × 932 (273 KB) | Yann | Cropped 10 % horizontally, 9 % vertically using CropTool with precise mode. | |
17:29, 20 February 2024 | 786 × 1,024 (306 KB) | Yann | https://tile.loc.gov/storage-services/service/pnp/fsa/8d05000/8d05500/8d05511v.jpg | ||
19:59, 6 July 2011 | 719 × 958 (210 KB) | BrineStans | higher res | ||
20:04, 14 August 2009 | 431 × 560 (32 KB) | BrineStans | {{Information |Description={{en|1=Nitrogen determination apparatus, part of research conducted during World War II by the Tennessee Valley Authority and the University of Tennessee. }} |Source=[http://lcweb2.loc.gov/cgi-bin/query/h?pp/PPALL:@field(NUMBER |
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