Kandungan Logam Berat Timah Hitam (Pb) dalam Urine Siswa Sekolah Dasar. JOTING [Internet]. 2022 Oct. 20 [cited 2025 Sep. 21];4(2):575-81. Available from: https://journal.ipm2kpe.or.id/index.php/JOTING/article/view/3907