Reconnaissance borehole geophysical, geological, and hydrological data from the proposed hydrodynamic compartments of the Culpeper Basin in Loudoun, Prince William, Culpeper, Orange, and Fairfax Counties, Virginia [electronic resource] / by Michael P. Ryan ... [et al.].
Mode of access: Internet via the USGS web site. Address as of 07/09/08: http://pubs.usgs.gov/of/2006/1203/ofr2006-1203.pdf; current access available via PURL.