Ubaedullah, Dudun, Department of Education Management, Universitas Negeri Jakarta, Jakarta Timur, 13220, (Indonesia)
Ulfah, Sri Wahyuni, Department of Elementary School Teacher Education, Universitas Djuanda Bogor, (Indonesia)
Umami, Ida, Institut Agama Islam Negeri Metro (Indonesia)
Umar, Mardan, Universitas Negeri Manado, Sulawesi Utara (Indonesia)
Umar, Mardan, State University of Manado, Minahasa (Indonesia)
Unaida, Ratna, Department of Chemistry Education, Universitas Malikussaleh, Aceh, 24351 (Indonesia)
Utomo, Erry, Postgraduate Basic Education, Universtas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta Timur 13220, (Indonesia)
Utomo, Erry, Department of Elementary Education, School of Postgraduate Studies, State University of Jakarta, Jakarta, 13220 (Indonesia)
Utomo, Hery Setyo, Department of Outside School Education, Faculty of Education Science, Universitas Negeri Surabaya, Surabaya, East Jawa (Indonesia)
Utomo, Utomo, Elementary Educational Programs, Faculty of Business dan Humanities, Nusa Putra University, Sukabumi (Indonesia)

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