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GEOLOGY ON POST STAMPS |
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GEOLOGY ON POST STAMPS |
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Gwinea / Guinea
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Annabergit 
Annabergite |
Wiwianit
Vivianite |
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Azuryt
Azurite |
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Znaczki i bloczek wydane w roku 1999.
The stamps and the
block issued in 1999.
Images courtesy A. Zydorczak
