Harahap FS, Lubis LT. Analysis of Heavy Metals Distribution in the River Town of Hamasaki’s Rod Padangsidimpuan. EKSAKTA [Internet]. 2018Oct.30 [cited 2024Apr.19];19(2):50-6. Available from: https://eksakta.ppj.unp.ac.id/index.php/eksakta/article/view/149