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Water-quality assessment of the Cambrian-Ordovician aquifer system in the northern Midwest, United S

Wilson, John T. (John Thomas), 1963-
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2012. 2012

Simulation of regional ground-water flow in the Cambrian-Ordovician aquifer system in the northern M

Mandle, Richard J.
[Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by Book and Open-File Report Sales, 1992. 1992

Postflood occurrence of selected agricultural chemicals and volatile organic compounds in near-surfa

Kolpin, Dana W.
[Washington, D.C.] : U.S. G.P.O. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : Free on application to the USGS Information Services [distributor], 1995. 1995

Basin and range carbonate aquifer system study

[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [2005] 2005