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Ade Isma Hasibuan
FKIP Universitas Muhammadiyah Tapanui Selatan
Indonesia

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Abubakar Abubakar
FKIP Universitas Muhammadiyah Tapanui Selatan
Indonesia

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Fatma Suryani Harahap
FKIP Universitas Muhammadiyah Tapanui Selatan
Indonesia

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