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Journal of Research in Science Teaching > 53 > 6 > 805 - 820
International Journal of Politics, Culture, and Society > 2012 > 25 > 4 > 95-110
Journal of Research in Science Teaching > 53 > 6 > 805 - 820
International Journal of Politics, Culture, and Society > 2012 > 25 > 4 > 95-110