Irwan, A. I., Abdullah, N. H., & Amir, S. N. (2026). GEOTECHNICAL RISK ASSESSMENT OF SUBSURFACE CAVITIES IN LIMESTONE FORMATIONS USING 2D ELECTRICAL RESISTIVITY TOMOGRAPHY (ERT) FOR INFRASTRUCTURE DEVELOPMENT IN KAMPAR, PERAK DARUL RIDZUAN, MALAYSIA. PLANNING MALAYSIA, 24(44). https://doi.org/10.21837/pm.v24i44.2313