Skorbiłowicz, Elżbieta, Mirosław Skorbiłowicz, Emilia Zamojska, and Paulina Wójtowicz. “Metals in Organs of Bottom Sediments and Aquatic Plants of the Ełk River and Its Tributaries”. Geology, Geophysics and Environment 44, no. 3 (August 7, 2018): 281. Accessed December 4, 2024. https://journals.agh.edu.pl/geol/article/view/2740.