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Source:
Science Activities. 2018, Vol. 55 Issue 1/2, p46-57. 12p. 6 Color Photographs, 2 Black and White Photographs, 4 Charts.
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Science Activities. 2023, Vol. 60 Issue 2, p71-89. 19p. 11 Color Photographs, 3 Diagrams, 3 Charts.
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Science Activities. 2020, Vol. 57 Issue 3, p111-121. 11p. 4 Color Photographs, 3 Diagrams, 3 Charts.
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Science Activities; 2023, Vol. 60 Issue 4, p171-184, 14p, 2 Color Photographs, 9 Charts
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Science Activities; 2020, Vol. 57 Issue 2, p67-76, 10p, 4 Color Photographs, 3 Diagrams, 3 Charts
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Science Activities; 2020, Vol. 57 Issue 2, p49-57, 9p, 4 Color Photographs, 2 Diagrams, 2 Charts
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Science Activities. 2015, Vol. 52 Issue 2, p45-52. 8p. 2 Color Photographs, 3 Diagrams.
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Science Activities. Fall2008, Vol. 45 Issue 3, p37-40. 4p. 1 Illustration.
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Science Activities. 2016, Vol. 53 Issue 2, p68-73. 6p. 5 Color Photographs, 1 Diagram, 1 Chart.
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