AGO ATOSHI , M. . and JOHNSON GANI (2023) “CHARACTERIZATION OF HETEROGENOUS CATALYST PRODUCED BY PHYSICAL ACTIVATION OF Cocos nucifera SHELL WASTE”, BIMA JOURNAL OF SCIENCE AND TECHNOLOGY (2536-6041), 7(02. 1), pp. 113-123. doi: 10.56892/bima.v7i02. 1.463.