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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Summary
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English: Nitrogen determination apparatus, part of research conducted during World War II by the Tennessee Valley Authority and the University of Tennessee. |
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Licensing
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This image is a work of an employee of the United States Farm Security Administration or Office of War Information domestic photographic units, taken as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain in the United States. See Copyright. | 
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| 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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Credit:
(see original file).
