File:German WWII Vacuum tubes IMG 0757.png
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![File:German WWII Vacuum tubes IMG 0757.png](https://upload.wikimedia.org/wikipedia/commons/thumb/b/b6/German_WWII_Vacuum_tubes_IMG_0757.png/800px-German_WWII_Vacuum_tubes_IMG_0757.png?20240120203119)
Size of this preview: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels | 1,280 × 960 pixels | 2,560 × 1,920 pixels | 4,032 × 3,024 pixels.
Original file (4,032 × 3,024 pixels, file size: 13.51 MB, MIME type: image/png)