File:Avia BH-21 right front photo NACA Aircraft Circular No.22.jpg
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| Description |
English: Avia BH-21 photo from NACA Aircraft Circular No.22 |
| Date | |
| Source | https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930089220.pdf |
| Author | NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:34, 5 May 2018 | | 1,641 × 1,269 (404 KB) | Stuffy Carrot (talk | contribs) | User created page with UploadWizard |
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