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Ru| Title | Correspondence with the Imperial Russian Technical Society and the Minister of Trade and Industry about the construction of the Exhibition "White and Gray" in St. Petersburg in 1913, with the application of European Russia maps, with the indication of the main sources of water forces and uncomfortable lands |
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| Series | Land improvement department of the Ministry of Agriculture |
| Fonds | Дело о школьной сети Сальского округа Области Войска Донского Харьковского учебного округа. Составлена в 1911 году. Сведения приурочены к 1910-1911 году |
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