Oktarisa, Y., Department of Science Education, University of Copenhagen
Oktasari, D., Universitas Negeri Yogyakarta
Oktaviani, F., Jakarta State University
Oktavianti, E., Malang State University
Oktovian, R. A., FKIP Universitas Lambung Mangkurat, Banjarmasin
Omar, N., University Putra Malaysia
Onesimus, O., Universitas Negeri Makassar
Ong, E. T., Sultan Idris Education University
Ong, S. W., Universiti Pendidikan Sultan Idris
Ortega-Torres, E., Universitat de Valencia - Florida Universitària Science Education
Osman, K., National University of Malaysia

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