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Source:
Studies in Science Education. 2000, Vol. 35, p174-180. 7p.
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Source:
Studies in Science Education. 2000, Vol. 35, p181-186. 6p.
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Source:
Studies in Science Education. 2000, Vol. 35, p190-197. 8p.
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Source:
Studies in Science Education. 2000, Vol. 35, p187-189. 3p.
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