Vovkunovych, M.O. 2024. Research retrospective on the ecological state of Borzhava river basin (Transcarpathian region). Visnyk of V. N. Karazin Kharkiv National University. Series Еcоlogy. 30 (Jul. 2024), 49-62. DOI:https://doi.org/10.26565/1992-4259-2024-30-04.