Gontaszewska, A., and A. Kraiński. “SLUDGE EFFECT ON GROUNDWATER QUALITY”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 26, 2006): 85–91. Accessed December 22, 2024. https://journals.ru.lv/index.php/ETR/article/view/1988.