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Rahmadini, Wulan, Universitas Sumatera Utara (Indonesia)
Ramlan, Ramlan, Universitas Muhammadiyah Sumatera Utara
Ridho, Muhammad, Universitas Muhammadiyah Sumatera Utara
Rinaldi, Muhammad Rizky, Universitas Muhammadiyah Sumatera Utara (Indonesia)
Roji, Fathur, Universitas Sumatera Utara (Indonesia)
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