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Work in progess
Geology
Rocks
Fossils
Minerals
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Rossija
1971
Diamond - Shah
Diamond
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Rossija
1989
International Union of Crystallogrphy
Quart Cristals |
Mines
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c
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Magyar
Miskolc
Spring Mineral Meeting
10-03-1984
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Petroleum
Caves
Late volcanic activity
Last modified: Lunedì 20 febbraio 2012
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