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All Forums Category: General Philatelic Discussions (Non Country Specific) Forum: Topical Stamp Collecting

Models Of Chemical Elements And Compounds

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KuoLC5310
Bedrock Of The Community
United States
28576 Posts
Posted 01/14/2026   10:14 am  Show Profile Bookmark this reply Add KuoLC5310 to your friends list  Get a Link to this Reply
Spain 1965 EXPOQUIMICA 65
The FDC shows ball-and-stick model of a macromolecule.
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KuoLC5310
Bedrock Of The Community
United States
28576 Posts
Posted 01/14/2026   11:38 am  Show Profile Bookmark this reply Add KuoLC5310 to your friends list  Get a Link to this Reply
Germany 1982 The 100th Anniversary of the Death of Friedrich Wöhler
The FDC shows ball-and-stick model of urea.
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