Wijayanto, B. and Adhetya, D. 2021. Content Analysis of Geography Subject based on Olimpiade Sains NasionaL (OSN) Insenior High School of Padang City. Journal of Learning Improvement and Lesson Study. 1, 1 (Jul. 2021), 25–30. DOI:https://doi.org/10.24036/jlils.v1i1.6.