“Analysis Of Lead Level In Fish As a Water Bioindicator”. Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam 17, no. 2 (December 31, 2020): 137–141. Accessed June 21, 2026. https://jurnal.univpgri-palembang.ac.id/index.php/sainmatika/article/view/5053.