1.
Suwandi Y. PENINGKATAN HASIL BELAJAR IPA TENTANG EKOSISTEM MELALUI METODE PROBLEM BASED LEARNING PADA SISWA KELAS V SEKOLAH DASAR KABUPATEN TANA TIDUNG. JPD [Internet]. 2015May30 [cited 2024May13];6(1):93 -02. Available from: https://journal.unj.ac.id/unj/index.php/jpd/article/view/436