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Safitriyanti DE, Sumardi H, Haji S, Zahara Z. MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MELALUI PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING DI SMPN 1 LEBONG. j. penelit. n.a mat. sekol [Internet]. 2023 Apr. 30 [cited 2024 May 21];7(1):148-5. Available from: https://ejournal.unib.ac.id/JPPMS/article/view/27147