NURAIDA, Dede; ISNANI, Isnani. VALIDITAS MODUL BIOLOGI KELAS VII BERBASIS PROBLEM SOLVING PADA MATERI PENCEMARAN LINGKUNGAN. Prosiding SNasPPM, [S. l.], v. 5, n. 2, p. 251–256, 2021. Disponível em: http://prosiding.unirow.ac.id/index.php/SNasPPM/article/view/416. Acesso em: 2 may. 2024.