@article{Kropachev2023local,
author={Kropachev, S.A.},
title={Local groups of the Russian ethnos at the end of the XIX-first quarter of the XX centuries : historical and demographic research},
journal={Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences},
publisher={FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"},
year={2023},
pages={34-39},
volume={0},
issue={8},
}