TY JOUR TI Sanitary conditions, medical care and infectious diseases in the Komi region in the second half of the XIX-early XX centuries KW sanitary conditions KW infectious diseases KW epidemics KW sanitary and hygienic concepts KW health care KW mortality KW Komi region JO Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences AU Vishnyakova, D.V. PY 2023 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"