Yoon Jung Choi และ Sujeong Lee;Eunsu Lee;Chanung Park;Samgyu Park. (2022) Happy Geoscience Edu: A new geoscience education system in the time of COVID-19. <i>Thai Geoscience Journal</i>, <i>3</i>(4), 1-4.Yoon Jung Choi และ Sujeong Lee;Eunsu Lee;Chanung Park;Samgyu Park. "Happy Geoscience Edu: A new geoscience education system in the time of COVID-19". Thai Geoscience Journal 3 (2022):1-4.Yoon Jung Choi และ Sujeong Lee;Eunsu Lee;Chanung Park;Samgyu Park. Happy Geoscience Edu: A new geoscience education system in the time of COVID-19. Department of Mineral Resources of Thailand:ม.ป.ท. 2022.