Purnamasari L, Zikra Z, Reza F. PENGARUH MODEL PROBLEM-BASED LEARNING (PBL) TERHADAP PENGUASAAN KONSEP IPA MATERI PENCEMARAN LINGKUNGAN. Biodik [Internet]. 2018 Apr. 23 [cited 2025 Apr. 19];2(2):62-6. Available from: https://mail.online-journal.unja.ac.id/biodik/article/view/4908