Sadvokassova, Z. 2021. Materials of the CSA of the RK as sources for the research of the missionary activity of orthodox preachers (XIX-early XX centuries). Bulletin of the Karaganda university History. Philosophy series. 103, 3 (Sep. 2021), 97–108. DOI:https://doi.org/10.31489/2021hph3/97-108.