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Maine Geological Survey, Open-File Map 81-9
Maine Geological Survey
Surficial Geology Maps (scale 1:62,500)
Brewer, Thomas, 1981, Reconnaissance surficial geology of the Houlton [15-minute] quadrangle, Maine: Maine Geological Survey, Open-File Map 81-9, map, scale 1:62,500. Maine Geological Survey Maps. 641. http://digitalmaine.com/mgs_maps/641
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