Phan, Cong Ngoc, Andrzej Strużyński, and Tomasz Kowalik. “Monthly Changes in Physicochemical Parameters of the Groundwater in Nida Valley, Poland (case Study)”. Journal of Water and Land Development 56, no. 56 (March 30, 2023): 220–234. Accessed October 20, 2026. https://wydawnictwo.pan.pl/index.php/jwld/article/view/4801.