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Ridge, Jack C., cartographer.
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Geology
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Vermont
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Place
Cheshire County
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1. Surficial geologic map of the Alstead 7.5 minute quadrangle and Bellows Falls 7.5 minute quadrangle, Cheshire and Sullivan Counties, New Hampshire and Windham and Windsor Counties, Vermont /
Ridge, Jack C., cartographer. [U.S. Geological Survey],.