Category:Konstantin Mikhailovich Dobrovolsky

**Konstantin Dobrovolsky**
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Date of birth	14 October 1868 (in Julian calendar)
Country of citizenship	Russian Empire;
Educated at	Saint Petersburg Mining Institute (–1894);
Occupation	mining engineer;
Award received	Order of Saint Stanislaus, 3rd class;
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	Q108326675;
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Media in category "Konstantin Mikhailovich Dobrovolsky"

The following 4 files are in this category, out of 4 total.