ISSN:2306-5680 HYDROLOGY, HYDROCHEMISTRY AND HYDROECOLOGY. 2020. № 2 (57) Year: 2020Number: №2 (57) HISTORY OF SCIENCEKhilchevskyi V.K. Essay on the history of surface water hydrochemistry in Ukraine ………… 5-87 INFORMATIONKhilchevskyi V.K. Generalized list of publications in the scientific collection “Hydrology, hydrochemistry and hydroecology” for 2016-2020………… 88-104