For citations:

Chernoukhov D.E., Chernoukhov E.A. Zemstvo and Mining Medicine of the Perm Province in 1870-1880s: Beginning of Interaction. Nauchnyi dialog. 2019;(12):447-457. (In Russ.) https://doi.org/10.24224/2227-1295-2019-12-447-457