For citations:
Semenov A.I., Efremov V.M., Valeullina N.N., Zvezdin S.M. History of the sanitary and epidemiological service of the Chelyabinsk region. Title in english. 2022;17(2):6-14. (In Russ.)
Semenov A.I., Efremov V.M., Valeullina N.N., Zvezdin S.M. History of the sanitary and epidemiological service of the Chelyabinsk region. Title in english. 2022;17(2):6-14. (In Russ.)