Suasira, I Wayan, I Made Tapayasa, I Ketut Sutapa, & I Made Anom Santiana. "Effectiveness of Using Hollow as Column Formwork Amplifier Compared with Wood Beam." Logic : Jurnal Rancang Bangun dan Teknologi [Online], 20.2 (2020): 80-84. Web. 19 Apr. 2024