EarthWorks Geospatial Catalog

Bedrock geologic map of the Grafton quadrangle, Worcester County, Massachusetts [cartographic material] / Gregory J. Walsh, John N. Aleinikoff, and Michael J. Dorais ; U.S. Department of the Interior, U.S. Geological Survey ; prepared in cooperation with the Commonwealth of Massachusetts, Massachusetts Geological Survey.

Relief shown by contours and spot heights. Shipping list no.: 2012-0214-P. Includes location map, index map, lithologic column, col. ill., 1 table, and 3 cross-sections.
U.S. Geological Survey ;
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