Mardalena, M., M. Faizal, and A. Napoleon. “METAL OF IRON (Fe) AND MANGAN (Mn) FROM WASTE WATER COAL MINING WITH FITOREMEDIATION TECHNIQUES WITH USING FLOATING FERN (Salvinia natans), WATER LETTUCE (Pistia Stratiotes) AND WATER-HYACINTH (Eichornia Crassipes)”. BIOVALENTIA: Biological Research Journal, vol. 4, no. 1, May 2018, pp. 32-38, doi:10.24233/BIOV.4.1.2018.107.