Jonathan R. Dungca, and Julie Ann L. Jao. “STRENGTH AND PERMEABILITY CHARACTERISTICS OF ROAD BASE MATERIALS BLENDED WITH FLY ASH AND BOTTOM ASH”. GEOMATE Journal 12, no. 31 (November 30, 2016): 9–15. Accessed June 27, 2022. https://geomatejournal.com/geomate/article/view/1056.