Ruchjana, Budi Nurani, Department of Mathematics, Universitas Padjadjaran, Bandung (Indonesia)
Ruchjana, Budi Nurani, Department of Mathematics Universitas Padjadjaran (Indonesia)
Ruslau, Maria F V, Department of Mathematics Education, Musamus University, Merauke (Indonesia)
Ruslau, Maria F V, Department of Mathematics Education, Faculty of Teacher Training and Education, Musamus University, Merauke (Indonesia)
Ruslau, Maria Fransina Veronica, Department of Mathematics Education, Universitas Musamus (Indonesia)
Rusmayadi, Muh, Universitas Nahdlatul Wathan Mataram (Indonesia)
Rustam, Ahmad, Department of Elementary school teacher education, Universitas Sulawesi Tenggara (Indonesia)
Rusyaman, Endang, Department of Mathematics, Faculty of Mathematics and Natural Science, Universitas Padjadjaran (Indonesia)

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