File:Sagan-critical-thinking-course.png
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Sagan-critical-thinking-course.png (800 × 474 pixels, file size: 394 KB, MIME type: image/png)
Carl Sagan and his Cornell Course
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 13:50, 29 January 2018 | 800 × 474 (394 KB) | Siterunner (talk | contribs) |
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