C. Vasquez, F. Y., P. Fuentes, A. G. and F. Casinillo, L. (2024) “Evaluating eco-friendly soil neutralizers: The use of pulverized eggshells and clam shells in enhancing rice field soil acidity”, EDUCATUM Journal of Science, Mathematics and Technology, 11(1), pp. 101–109. doi: 10.37134/ejsmt.vol11.1.10.2024.