Ans, L. .; Haryanto, B. . Arabic Language Curriculum Development in Ma’had Umar Bin Al-Khattab Surabaya in Maintaining Middle Eastern Culture-Based Educational Institutions.: Pengembangan Kurikulum Bahasa Arab Di Ma’had Umar Bin Al-Khattab Surabaya Dalam Mempertahankan Lembaga Pendidikan Berbasis Kultur Timur Tengah. acopen 2021, 5, 10.21070/acopen.5.2021.2199.