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| Title | Letters (two) [lieutenant] Gerna Konstantin Petrovich von Kaufman about the state of engineering in Spain and Algeria, about the crash of the train and his desire to visit the Prussian and Austrian fortresses |
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| Series | Materials to the history of the KAUFMANS genus;Personal and official documents K.P., M.P., P.M.Kaufman |
| Fonds | Von Kaufman and von Kaufman Turkestan |
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