Stamps of Russia, Periodic Law 100th issue

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postage

1969, Jun 20 Periodic Law 100th issue unwmk p. 12
Mendelejew-sovjet-stamp_a.jpg.JPGColnect-4561-626-Block-Centenary-of-Mendeleev-s-Periodic-Law-of-Elements.jpg
X 6k multi Dmitri Mendeleev & formulas
- 30k car sheet — —

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