TY - RPRT TI - Regression models for estimating concentrations of atrazine plus deethylatrazine in shallow groundwater in agricultural areas of the United States AU - Paul E. Stackelberg AU - Jack E. Barbash AU - Robert J. Gilliom AU - Wesley W. Stone AU - David M. Wolock PY - 2012 DO - 10.2134/jeq2011.0200 UR - https://pubs.usgs.gov/publication/70007224 ID - 70007224 ER -