Leitner_system_animation.gif (500 × 300 pixels, file size: 41 KB, MIME type: image/gif, looped, 80 frames, 21 s)
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current | 22:56, 25 August 2020 | ![]() | 500 × 300 (41 KB) | Mikhail Ryazanov | cropped |
22:30, 11 December 2012 | ![]() | 550 × 400 (47 KB) | Zirguezi | User created page with UploadWizard |
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