Kalinkina, N.M. “Relationship Between Hydrobiological And Hydrochemical Parameters Of Lakes Of Karelia As Influenced By Their Geoecological Characteristics”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 2 (August 5, 2015): 352–355. Accessed May 4, 2024. https://journals.ru.lv/index.php/ETR/article/view/980.