Mahfuz Hazemi Alim. PENERAPAN MODEL PROBLEM BASED LEARNING ( PBL) TERHADAP HASIL BELAJAR SISWA PADA MATERI PENCEMARAN AIR DI SMPS ISLAM QIBLATUL MUSTAQIM. JBK [Internet]. 2021 Mar. 8 [cited 2024 May 20];3(1):48-52. Available from: https://e-journal.unmas.ac.id/index.php/JBK/article/view/8064