En
Ru| Description |
The history of the geological study of Siberia: the first period - hugging the XVII and XVIII centuries (Gmelin, Pallas, Georges) / Obruchev V.A.- 1931. -.Electronic copy source: Omsk Gonb
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| Description |
The history of the geological study of Siberia: the first period - hugging the XVII and XVIII centuries (Gmelin, Pallas, Georges) / Obruchev V.A.- 1931. -.Electronic copy source: Omsk Gonb
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