TY - RPRT TI - A GIS-based groundwater travel time model to evaluate stream nitrate concentration reductions from land use change AU - K. E. Schilling AU - C.F. Wolter PY - 2007 DO - 10.1007/s00254-007-0659-0 UR - https://pubs.usgs.gov/publication/70031587 ID - 70031587 ER -