Van Ngo, D., & Viet Ky, N. (2003). SMALL DIAMETER PRESSING DRILLING POLE METHOD FOR HIGH BUILDINGS IN HO CHI MINH CITY. VNUHCM Journal of Science and Technology Development, 6(5&6), 46-49. https://doi.org/https://doi.org/10.32508/stdj.v6i5&6.3331