File:PopularScienceSeptember1925.png
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![File:PopularScienceSeptember1925.png](https://upload.wikimedia.org/wikipedia/commons/thumb/0/07/PopularScienceSeptember1925.png/431px-PopularScienceSeptember1925.png?20210124152809)
Size of this preview: 431 × 600 pixels. Other resolutions: 172 × 240 pixels | 345 × 480 pixels | 864 × 1,202 pixels.
Original file (864 × 1,202 pixels, file size: 2.08 MB, MIME type: image/png)