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ARIFIN, A. Zaenal et al. Zero waste through blended learning based learning for social studies education students in Malang State University. Proceeding of International Conference on Islamic Education (ICIED), [S.l.], v. 4, n. 1, p. 311-314, dec. 2019. ISSN 2613-9804. Available at: <https://conferences.uin-malang.ac.id/index.php/icied/article/view/1110>. Date accessed: 14 may 2026.