Category:Celor lens diagrams
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Media in category "Celor lens diagrams"
The following 3 files are in this category, out of 3 total.
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Celor lens (Wix).svg 150 × 150; 2 KB
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Ptp p86 img02.png 622 × 670; 146 KB
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Warmisham US1361207A (Aviar, 1917).svg 200 × 250; 2 KB