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Sangkong R, Suriani N, Harahap F. PENGARUH MODEL PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR SISWA PADA MATERI SISTEM PENAPASAN MANUSIA DI SMP NEGERI 3 TONDANO. jsoscied [Internet]. 6May2025 [cited 5Jul.2025];8(1):57-6. Available from: https://www.poltekstpaul.ac.id/jurnal/index.php/jsoscied/article/view/914