Carillo, L. A. and Gallardo, S. M. (2004) “Heavy Metals Characterization of Sludge from a Philippine Recycling Paper Mill”, ASEAN Journal of Chemical Engineering, 4(2), pp. 58-65. Available at: https://dev.journal.ugm.ac.id/v3/AJChE/article/view/7625 (Accessed: 23November2024).