“Front & Back Matter 2019 Vol. 3 No. 1” (2019) Jurnal Bakti Saintek: Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi, 3(1). Available at: https://ejournal.uin-suka.ac.id/saintek/jbs/article/view/1618 (Accessed: 31 January 2026).