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Maine Geological Survey, Open-File Map 01-139
Maine Geological Survey
William J. Nichols Jr, Craig D. Neil, and Thomas K. Weddle, Hydrogeology and water quality of significant sand and gravel aquifers in parts of Franklin, Oxford and Somerset Counties, Maine
Significant Sand and Gravel Aquifer Maps (scale 1:24,000)
Foster, Lauren E., Lewis, Elizabeth B., Neil, Craig D. (compilers), Weddle, Thomas K. (mapper) , 2001, Significant sand and gravel aquifers in the Madrid quadrangle, Maine: Maine Geological Survey, Open-File Map 01-139, map, scale 1:24,000. Maine Geological Survey Maps. 1431. http://digitalmaine.com/mgs_maps/1431
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