Shpynova
Natalia Valerievna,
applicant, Yugra State University,
e-mail: shpynova@mail.ru

Biological activity of humic acids of bottom sediments of lakes of the Middle Ob region
Shpynova N.V., Sartakov M.P., Barabanshchikova L.N., Rybachuk O.V.
         2023,    N 2

Optical density and atomic ratios N/S of humic acids of bottom sediments of lakes of the Middle Ob region
Shpynova N.V., Sartakov M.P., Osnitskiy E.M.
         2024,    N 2