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UCY J. ANALISIS KESULITAN BELAJAR MATEMATIKA PADA TOPIK LOGIKA PADA SISWA SMK MUHAMMADIYAH 3 KLATEN UTARA. intersections [Internet]. 23Jul.2019 [cited 25May2020];3(02). Available from: https://jurnal.ucy.ac.id/index.php/intersections/article/view/162