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Source:
American Biology Teacher (National Association of Biology Teachers). Oct2007, Vol. 69 Issue 8, p473-476. 4p. 2 Black and White Photographs, 1 Chart.
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American Biology Teacher (National Association of Biology Teachers). Apr2008, Vol. 70 Issue 4, p222-229. 8p. 9 Diagrams, 2 Charts, 1 Graph.
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American Biology Teacher (National Association of Biology Teachers). May2010, Vol. 72 Issue 5, p296-300. 5p. 1 Black and White Photograph, 1 Chart.
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American Biology Teacher (National Association of Biology Teachers). Sep2007, Vol. 69 Issue 7, p394-399. 5p. 1 Chart.
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American Biology Teacher (National Association of Biology Teachers). Apr2006, Vol. 68 Issue 4, p227-231. 5p.
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American Biology Teacher (National Association of Biology Teachers); August 2008, Vol. 70 Issue 6, p336-341, 6p
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American Biology Teacher (National Association of Biology Teachers); May 2007, Vol. 69 Issue 5, p273-279, 7p
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American Biology Teacher (National Association of Biology Teachers); August 2009, Vol. 71 Issue 6, p332-335, 4p
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American Biology Teacher (National Association of Biology Teachers); March 2011, Vol. 73 Issue 3, p171-175, 5p
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American Biology Teacher (National Association of Biology Teachers); September 2009, Vol. 71 Issue 7, p412-417, 6p
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