character: William Smith
topic: Stratigraphy and the Geological Time Scale
grade: 12
subject: Biology
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character: Charles Lyell
topic: Principles of Geology and Uniformitarianism
grade: 12
subject: Biology
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character: James Hutton
topic: The Theory of the Earth and Geological Processes
grade: 12
subject: Biology
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character: John Phillips
topic: Development of the Geological Time Scale
grade: 12
subject: Biology
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