TY - RPRT TI - Educational webtool illustrating groundwater age effects on contaminant trends in wells AU - John Karl Böhlke AU - Bryant C. Jurgens AU - David J. Uselmann AU - Sandra M. Eberts PY - 2014 DO - 10.1111/gwat.12261 UR - https://pubs.usgs.gov/publication/70135339 ID - 70135339 ER -