Maulana S, Desnita D, Raihanati R. The Development of Knowledge Enrichment Books Concerning Ice and Snow Physical Studies for High-School Students. jpppf [Internet]. 2018 Dec. 31 [cited 2024 Dec. 21];4(2):83-90. Available from: https://journal.unj.ac.id/unj/index.php/jpppf/article/view/7350