Oktavianto A. Field Study Terintegrasi Hybrid Learning: Solusi Pembelajaran Dasar-Dasar Geologi Selama Pandemi Covid-19. JGEL [Internet]. 2021 Jan. 29 [cited 2024 Jul. 16];5(1):1-14. Available from: https://journal.uhamka.ac.id/index.php/jgel/article/view/6068