Koval, I.Z. 2021. Effectiveness of Using Gases for Water Purification with the Same Microbial Load. Visnyk of V. N. Karazin Kharkiv National University. Series Еcоlogy. 25 (Nov. 2021), 125-134. DOI:https://doi.org/10.26565/1992-4259-2021-25-11.