Małecki, A. “OUTFLOW OF THE BIOGENIC SUBSTANCES IN THE DRAINAGE AREA OF SŁAWSKIE LAKE”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 26, 2006): 166–170. Accessed December 22, 2024. https://journals.ru.lv/index.php/ETR/article/view/2003.