TY - RPRT TI - Factors affecting occurrence and distribution of selected contaminants in ground water from selected areas in the Piedmont Aquifer System, Eastern United States, 1993-2003 AU - Bruce D. Lindsey AU - W. Fred Falls AU - Matthew J. Ferrari AU - Tammy M. Zimmerman AU - Douglas A. Harned AU - Eric M. Sadorf AU - Melinda J. Chapman PY - 2006 DO - 10.3133/sir20065104 UR - https://pubs.usgs.gov/publication/sir20065104 ID - sir20065104 ER -