EarthWorks Geospatial Catalog

Surficial geologic map of the Hillsborough County, New Hapshire part of the Nashua south quadrangle, New Hampshire and Massachusetts / by Richard Goldsmith, 1992 ; prepared in cooperatrion with the U. S. Geological Survey.

"Revised digital map published 2007." Additional geologic information added onto the 1992 map. Black line print. Relief shown by contours and spot heights. "Contour interval 10 feet." "Base from U.S. Geological Survey, 1965. Photorevised 1979." "Geology mapped in 1991." Includes quadrangle location map.
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