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Copyright (c) 2018 Usmadi Usmadi, Ergusni Ergusni
International Journal of Trends in Mathematics Education Research (IJTMER)
ISSN 2621-8488 (Online)
Published by the SAINTIS Publishing
Homepage: http://ijtmer.saintispub.com
Editor E-mail: ijtmer@saintispub.com; ijtmer@gmail.com
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