Contributions to the hydrology of the United States, 1927 Grover, Nathan Clifford 1868-1956 creator author. Geological Survey (U.S.) issuing body. text bibliography dcu 1928 monographic eng remote 1 online resource (v, 266 pages) : illustrations, maps. by Nathan C. Grover. Includes bibliographical references and index. n-usp-- Aquifers Analysis Artesian wells Geology, Stratigraphic Ordovician Groundwater Hydrology United States Water quality United States Water Analysis Water-supply United States Aquifers Analysis Artesian wells Geology, Stratigraphic Groundwater Hydrology Ordovician Geologic Period Water Analysis Water quality Water-supply United States From 425 to 500 million years ago fast I 19.13:596 I 19.13:596 Contributions to the hydrology of the United States, 1927 Grover, Nathan Clifford (OCoLC)20476804 Water-supply paper (Washington, D.C.) ; 596 https://purl.fdlp.gov/GPO/gpo109375 COP 160921 20190122121035.0 in00004011754 eng