Febrita, Elya. “Analysis of Concentration of Heavy Metal (Pb) and Cadmium (Cd) In Waterfish (Eichhornia Crassipes) in Indragiri River, Riau”. International Journal of Ecophysiology 2, no. 1 (May 19, 2020): 24-33. Accessed November 22, 2024. https://talenta.usu.ac.id/ijoep/article/view/3985.