Heavy Metals Contamination and the Evolution of Environmental Policy: A Comprehensive Bibliometric Reviews - Nofriandi, Alwi; Frinaldi, Aldri; Lanin, Dasman; Rembrandt, Rembrandt; Yulkifli, Yulkifli; Dewata, Indang; Siregar, Dewi; Insani, Munadia; Sati’at, Nur; Febrina, Suci (Science and Environmental Journal for Postgraduate, 2024)