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Fitriani Fitriani
Pendidikan Matematika FKIP, Universitas Muhammadiyah Tapanuli Selatan
Indonesia
Wiwik Novitasari
Pendidikan Matematika FKIP, Universitas Muhammadiyah Tapanuli Selatan
Indonesia
Yulia Anita Siregar
Pendidikan Matematika FKIP, Universitas Muhammadiyah Tapanuli Selatan
Indonesia
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