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Layli Rohmatillah, Zainur Ridho. EFEKTIVITAS MANAJEMEN LAYANAN PRIMA IBADAH UMRAH PT. NUR HARAMAIN MULIA. HARAMAIN : Jurnal Manajemen Bisnis [Internet]. 2021 Jan. 11 [cited 2026 Sep. 7];1(01):53-61. Available from: https://e-journal.ibama.ac.id/index.php/jmb/article/view/78