JPPPF, Editor. Front Matter JPPPF Volume 6 Issue 1, June 2020. Jurnal Penelitian & Pengembangan Pendidikan Fisika, [S. l.], v. 6, n. 1, 2020. DOI: 10.21009/1.06100. Disponível em: https://journal.unj.ac.id/unj/index.php/jpppf/article/view/15921. Acesso em: 22 nov. 2024.