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Maine Geological Survey, Open-File Map 10-38.
Maine Geological Survey
Hancock County; Penobscot County; Washington County
Bedrock Groundwater Resources Basic Data Maps
Tolman, Susan S. (compiler), 2010, Overburden thickness in the Calais 30x60-minute quadrangle, Maine: Maine Geological Survey, Open-File Map 10-38, map, scale 1:125,000. Maine Geological Survey Maps. 1867. http://digitalmaine.com/mgs_maps/1867
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