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| Title | Letter PAValuev (Dolgorukov V.A.) with general reasoning about railways and about the telegraph as the newest invention and the indulgences issued by the Poles |
|---|---|
| Series | Archive of Count Petr Aleksandrovich Valuev |
| Fonds | Valuev Petr Alexandrovich, Earl (1814-1890). Minister of Internal Affairs, Minister of State Property, Chairman of the Committee of Ministers, member of the Council of State |
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