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Maine Geological Survey, Open-File Map 98-22
Maine Geological Survey
William J. Nichols, Craig D. Neil, Daniel B. Locke, and Michael E. Foley, Hydrogeology and water quality of significant sand and gravel aquifers in parts of Piscataquis and Somerset Counties, Maine
Significant Sand and Gravel Aquifer Maps (scale 1:24,000)
Neil, Craig D. (compiler), Locke, Daniel B. (mapper) , 1998, Significant sand and gravel aquifers in the Number Four Mountain quadrangle, Maine: Maine Geological Survey, Open-File Map 98-22, map, scale 1:24,000. Maine Geological Survey Maps. 1299. http://digitalmaine.com/mgs_maps/1299
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