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GEOLOGY ON POST STAMPS |
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GEOLOGY ON POST STAMPS |
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Ghana / Ghana
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Ruda manganu 
Manganese ore |
Ruda żelaza
Iron ore |
Boksyt
Bauxite |
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Ruda złota
Gold ore |
Diament
Diamond |
Surowy
diament i brylant (diament oszlifowany), w tle rudy ze znaczków powyżej.
Raw and cut diamonds,
in the background the ores from the stamps above.
Images courtesy A. Zydorczak
