Category:Chemical elements on stamps

Media in category "Chemical elements on stamps"

The following 3 files are in this category, out of 3 total.

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  Stamp of Moldova - 2019 - Colnect 866154 - International Year Of The Periodic Table.jpeg 643 × 263; 64 KB
  
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  USSR PCWCS №02 International geochemical congress.jpg 3,540 × 2,502; 615 KB
  
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  USSR PCWCS №02 International geochemical congress.png 3,540 × 2,502; 6.7 MB