[1]
“ALLOPHANE OF GAMALAMA VOLCANIC SOIL SURFACE MODIFICATION USING SULFURIC ACID: STUDY OF THE EFFECT OF SULFURIC ACID CONCENTRATION”, Advanced Research & Development Journal, vol. 2, no. 1, Feb. 2026, Accessed: Sep. 12, 2026. [Online]. Available: https://www.ardjournal.com/index.php/ard/article/view/71