1. Apparent chlorofluorocarbon age of ground water of the shallow aquifer system, Naval Weapons Station Yorktown, Yorktown, Virginia Author/Creator: Nelms, David L. Publication/Creation: Richmond, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading
2. Aquifer susceptibility in Virginia : data on chemical and isotopic composition, recharge temperature, and apparent age of water from wells and springs, 1998-2000 Author/Creator: Nelms, David L. Publication/Creation: Richmond, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Resource Type: Book Access & Availability: Loading
3. Aquifer susceptibility in Virginia, 1998-2000 Publication/Creation: Denver, CO : U.S. Geological Survey, Branch of Information Service [distributor]. Resource Type: Book Access & Availability: Loading