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Sul Daeng Naba
Universitas Negeri Yogyakarta
Indonesia
Department of Physics Education
Edi Istiyono
Universitas Negeri Yogyakarta
Indonesia
Department of Physics Education
Aris Kurniawan
Universitas Negeri Yogyakarta
Indonesia
Department of Physics Education
Nanang Adrianto
Nara Institute of Science and Technology
Japan
Division of Materials Science
