TY - RPRT TI - Contaminants and drinking-water sources in 2001; recent findings of the U. S. Geological Survey AU - G. G. Patterson AU - M. J. Focazio PY - 2000 DO - 10.3133/ofr00510 UR - https://pubs.usgs.gov/publication/ofr00510 ID - ofr00510 ER -