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Ludman, Allan.
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Geology, Structural
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1. Bedrock geology of the Big Lake quadrangle, Maine
Ludman, Allan. Maine Geological Survey,.
2. Bedrock geology of the Calais 15ʹ Quadrangle, Eastern Maine
Ludman, Allan. Maine Geological Survey,.
3. Bedrock geology of the Danforth, Scraggly Lake, Forest, Waite, Vanceboro, and Kellyland 15ʹ quadrangles, Maine
Ludman, Allan. Maine Geological Survey,.
4. Preliminary bedrock and brittle fracture map of the Fredericton 2⁰ sheet, Maine
Ludman, Allan. Maine Geological Survey,.