JPPPF, Editor. Front Matter JPPPF Volume 6 Issue 2, December 2020. Jurnal Penelitian & Pengembangan Pendidikan Fisika, [S. l.], v. 6, n. 2, 2020. DOI: 10.21009/1.06200. Disponível em: https://journal.unj.ac.id/unj/index.php/jpppf/article/view/18717. Acesso em: 23 nov. 2024.