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Maine Geological Survey, Geologic Facts and Localities, Circular GFL-181
Maine Geological Survey
Thompson, Woodrow B., 2012, A Trick of the Light: Seeing (or Not Seeing) Geologic Features Under Different Lighting Conditions: Maine Geological Survey, Geologic Facts and Localities, Circular GFL-181, 8 p. Maine Geological Survey Publications. 472. http://digitalmaine.com/mgs_publications/472
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