Category:Function plots on stamps
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Media in category "Function plots on stamps"
The following 4 files are in this category, out of 4 total.
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DBP 1984 1219 Friedrich Wilhelm Bessel.jpg 840 × 720; 286 KB
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Friedrich Wilhelm Bessel.jpg 900 × 761; 116 KB
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Russia stamp 2000 № 599.jpg 779 × 558; 142 KB
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Stamp Heinrich Barkhausen.jpg 933 × 572; 212 KB