Wijayanto B, Adhetya D. Content Analysis of Geography Subject based on Olimpiade Sains NasionaL (OSN) Insenior High School of Padang City. jlils [Internet]. 2021Jul.29 [cited 2025Jan.15];1(1):25-30. Available from: https://jlils.ppj.unp.ac.id/index.php/jlils/article/view/6