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| Title | In the case of irrigation of the lands of the Karayaz estate of the Society for the Restoration of Orthodox Christianity in the Caucasus: Notes of Prince Trubetskoy with the marks of M.N.Ostrovsky, the results of the inspection of the irrigation structures of the Karayaz steppe by the engineer a knee, correspondence and another |
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| Series | Ostrovsky Mikhail Nikolaevich |
| Fonds | Ostrovsky Mikhail Nikolaevich (1827-1901) |
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