For citations:

Cherniga Yu.V., Shornikova E.A. Hydrochemical Characteristics of the Ob River and Its Tributaries (Within the Boundaries of Surgut and Nefteyugansk Districts). Surgut State Pedagogical University Bulletin. 2022;(6 (81)):183-191. (In Russ.) https://doi.org/10.26105/SSPU.2022.81.6.019