[1]
novieta sari, S. . Sidauruk, R. . Meiliawati, and A. R. P. Sari, “The Difficulties of X Grade High School Students in Palangka Raya City Academic Year of 2018/2019 in Understanding Chemical Bond Concept using Two-Tier Multiple Choice ”, JPMIPA, vol. 1, no. 2, pp. 135–148, Nov. 2020.