Author: Walsh, Gregory J. - Yale University Library GeoBlacklight Search Results

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1. Bedrock geologic map of the Grafton quadrangle, Worcester County, Massachusetts

2011. 2012-05-01T16:46:37Z. 2013-03-18T22:02:19Z. Walsh, Gregory J. U.S. Dept. of the Interior, U.S. Geological Survey ; For sale by U.S. Geological Survey, Information Services. English. Public. Massachusetts and Worcester County.

2. Bedrock geologic map of the Montpelier and Barre West quadrangles, Washington and Orange counties, Vermont [cartographic material]

2010. 2010-10-26T15:46:49Z. 2020-02-05T22:32:40Z. Walsh, Gregory J. U.S. Dept., of the Interior, U.S. Geological Survey ; For sale by U.S. Geological Survey, Information Services. English. Public. Vermont, Orange County, and Washington County.

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