Keryanti, K. and Mulyono, E.W.S. 2021. Determination of Optimum Condition of Lead (Pb) Biosorption Using Dried Biomass Microalgae Aphanothece sp. Periodica Polytechnica Chemical Engineering. 65, 1 (Jan. 2021), 116–123. https://doi.org/10.3311/PPch.15773.