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S.V. Martynov. "Pechora region". Physiographic and geographic description of the region in 2 copies. - 1904. -
Agreement No. 24 of February 12, 2016, Volume 1 "Manuscripts of the works of members of the Russian Geographical Society and separate documents on the Arkhangelsk Province", Inventory 1. Arkhangelsk Province, Case 102.
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Source of the electronic copy: PB |
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En
Ru