Analisis Kadar Phosfat dan N-Nitrogen (Amonia, Nitrat, Nitrit) pada Tambak Air Payau akibat Rembesan Lumpur Lapindo di Sidoarjo, Jawa Timur. Jurnal Kimia Valensi, [S. l.], v. 1, n. 3, 2008. DOI: 10.15408/jkv.v1i3.223. Disponível em: https://journal.uinjkt.ac.id/valensi/article/view/223. Acesso em: 27 oct. 2025.