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Yayuk Hayulina Manurung
Fakultas Keguruan dan Ilmu Pendidikan Universitas Muhammadiyah Sumatera Utara
Indonesia
Arya Rudi Nasution
Fakultas Teknik Universitas Muhammadiyah Sumatera Utara
Indonesia
Yudha Andriansyah Putra
Fakultas Pertanian Universitas Muhammadiyah Sumatera Utara
Indonesia
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