Dewi, Godfrida, 		Samson, Steven, AND 		Usman, Usman.
" ANALISIS KANDUNGAN LOGAM BERAT Pb DAN Cd DI MUARA SUNGAI MANGGAR BALIKPAPAN" <em>ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science)</em> [Online], Volume 12 Number 2 (30 November 2018)