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Maria Monica Situmorang, Yuyun Elizabeth Patras and Tatang Muhajang 2023. PENGARUH PENERAPAN MODEL PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR SUBTEMA PELESTARIAN KEKAYAAN SUMBER DAYA ALAM DI INDONESIA. Didaktik : Jurnal Ilmiah PGSD STKIP Subang. 9, 2 (Jul. 2023), 6258 - 6263. DOI:https://doi.org/10.36989/didaktik.v9i2.1325.