Department or Program
Maine Geological Survey, Open-File Map 18-12.
Eusden, J. Dykstra, Choe, Saebyul, Divan, Erik, Eusden, Riley, Watermulder, Sula, and Wheatcroft, Audrey, 2018, Bedrock Geology of the Gilead Quadrangle, Maine: Maine Geological Survey, Open-File Map 18-12, scale 1:24,000. Maine Geological Survey Maps. 2069.
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