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Journal of Research in Science Teaching > 60 > 2 > 423 - 447
Journal of Research in Science Teaching > 56 > 5 > 598 - 618
Journal of Research in Science Teaching > 55 > 8 > 1111 - 1133
Journal of Research in Science Teaching > 50 > 6 > 699 - 721
Journal of Research in Science Teaching > 49 > 3 > 281 - 304