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Optimalisasi Manajemen Waktu Belajar Siswa Melalui Metode Time Study di SMK Nurul Amaliyah

Josua Alexander Gultom, Windo Sinurat, Binsar Parulian Silitonga, Manaor Silitonga, Mananda Ture Siburian

7-14

15-06-2026

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