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GEOLOGY ON POST STAMPS |
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GEOLOGY ON POST STAMPS |
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Polska / Poland
Kierat konny do napędu urządzeń w kopalni soli "Wieliczka", XVII
w.; znaczek wydany w roku 1979.
Horse wheel as an engine from 17th century in the salt mine "Wieliczka",
Poland; the stamp issued in 1979.
Coll. T. Praszkier
