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Ratna Sari Simatupang, Dewi, Universitas Sumatera Utara (Indonesia)
Rosnaida, Dewi Yunita Sari,, Universitas Asahan (Indonesia)
Rosnaida, Enggar Rahmawan,, Universitas Asahan (Indonesia)
Rosnaida, Evi Setiawati,, Universitas Asahan (Indonesia)

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