Studi Adsorpsi Logam Berat Besi (Fe) dan Timbal (Pb) Air Sungai Mahakam oleh Limbah Cangkang Telur dan Abu Gosok. Progressive Physics Journal, [S. l.], v. 3, n. 2, p. 179–183, 2022. DOI: 10.30872/ppj.v3i2.929. Disponível em: https://jurnal.fmipa.unmul.ac.id/index.php/ppj/article/view/929. Acesso em: 23 oct. 2025.