TY - RPRT TI - Source and transport controls on the movement of nitrate to public supply wells in selected principal aquifers of the United States AU - P.B. McMahon AU - J.K. Böhlke AU - L. J. Kauffman AU - K.L. Kipp AU - M.K. Landon AU - C. A. Crandall AU - K.R. Burow AU - C. J. Brown PY - 2008 DO - 10.1029/2007wr006252 UR - https://pubs.usgs.gov/publication/70033435 ID - 70033435 ER -