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Yusuf H. PEMAHAMAN MATERI KETAHANAN NASIONAL TERHADAP KARAKTER DISIPLIN SISWA KELAS X DI SMA PGRI 56 CIPUTAT. JMKB [Internet]. 2021 Oct. 18 [cited 2024 Dec. 23];1(1):37-45. Available from: https://openjournal.unpam.ac.id/index.php/JMKB/article/view/13768