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Riski Dewanto
Universitas Negeri Yogyakarta
Indonesia
Department of Natural Science Education
Pujianto Pujianto
Universitas Negeri Yogyakarta
Indonesia
Department of Physics Education
Yusman Wiyatmo
Universitas Negeri Yogyakarta
Indonesia
Department of Physics Education
Adam Daffa Ghifari Yani
University Malaya
Malaysia
Department of Environmental Management Technology
