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F. X. Berek SMP Negeri Satu Atap Nusadani, Kec. Solor Barat, Kab. Flores Timur, Provinsi Nusa Tenggara Timur Indonesia
S. Sutopo Physics Department, Natural Sciences and Mathematics Faculty, Universitas Negeri Malang Indonesia
M. Munzil Chemistry Department, Natural Sciences and Mathematics Faculty, Universitas Negeri Malang Indonesia
ISSN: 2089-4392
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