PANE, E. P.; SIAHAAN, F. E. Analysis of Pollution Levels of Heavy Metals of Lead (Pb) And Copper (Cu) In Freshwater Fish In Lake Toba Water. JST (Jurnal Sains dan Teknologi), [S. l.], v. 12, n. 2, p. 385–395, 2023. DOI: 10.23887/jstundiksha.v12i2.53714. Disponível em: https://ejournal.undiksha.ac.id/index.php/JST/article/view/53714. Acesso em: 30 nov. 2024.