En
Ru| Description |
Geological map of the northern part of the USSR.9839. - 1937. -Appendix 1 to the Agreement No. 27/12/2021-RGO-BBD dated December 27, 2021..Electronic copy source: PB
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| Description |
Geological map of the northern part of the USSR.9839. - 1937. -Appendix 1 to the Agreement No. 27/12/2021-RGO-BBD dated December 27, 2021..Electronic copy source: PB
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