Items where Author is "Br. Purba, Efrahim Melinda"
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Br. Purba, Efrahim Melinda and Sinaga, Marudut (2020) PENGEMBANGAN BAHAN AJAR BERBASIS PROJECT BASED LEARNING (PjBL) PADA MATERI LAJU REAKSI UNTUK KELAS XI SMA. In: Seminar Nasional Kimia dan Pendidikan Kimia 2020, 12 Desember 2020, Medan.