Ground-water Levels in the United States Geological Survey (U.S.) Published: 1974 Total Pages: 218 Get eBook
Monthly Catalog of United States Government Publications, Cumulative Index United States. Superintendent of Documents Published: 1976 Total Pages: 1466 Get eBook
Publications of the Geological Survey Geological Survey (U.S.) Published: 1948 Total Pages: 776 Get eBook
List of U.S. Geological Survey Geologic and Water-supply Reports and Maps for Pennsylvania and New Jersey Published: 1988 Total Pages: 248 Get eBook