Category:Bulletin de l'Académie Impériale des Sciences de St.-Pétersbourg (1875)

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English: This year's bulletin is tome 20.

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This category has only the following subcategory.

Media in category "Bulletin de l'Académie Impériale des Sciences de St.-Pétersbourg (1875)"

The following 23 files are in this category, out of 23 total.