1.
Pane EP, Siahaan FE. Analysis of Pollution Levels of Heavy Metals of Lead (Pb) And Copper (Cu) In Freshwater Fish In Lake Toba Water. j. sains. teknologi. [Internet]. 2023 Oct. 22 [cited 2024 Dec. 2];12(2):385-9. Available from: https://ejournal.undiksha.ac.id/index.php/JST/article/view/53714