W. Budianta, I. W. Warmada, and M. Nurudin, “THE INFLUENCE OF MINERALOGICAL CHARACTERISTIC TO CATION EXCHANGE CAPACITY OF PACITAN NATURAL ZEOLITE, EAST JAVA”, Journal Technology of Civil, Electrical, Mechanical, Geology, Mining, and Urban Design, vol. 8, no. 1, pp. 93-98, Apr. 2023.