Hong Tham, D. “AN EXPERIMENTAL STUDY OF THE EFFECTS OF DYNAMICAL LOADINGS ON THE SHEAR STRENGTH OF SUBBASE SOIL USING A MODIFIED SHEARBOX APPARATUS”. Science and Technology Development Journal, Vol. 3, no. 2, Feb. 2000, pp. 23-39, doi:https://doi.org/10.32508/stdj.v3i2.3534.