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A. Winarsih http://journal.unnes.ac.id/index.php/jpii SMP Negeri 30 Semarang, Jawa Tengah, Indonesia Indonesia
S. Mulyani http://journal.unnes.ac.id/index.php/jpii Pendidikan IPA Pascasarjana Universitas Negeri Semarang, Indonesia Indonesia
ISSN: 2089-4392
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