TY - RPRT TI - System analysis to estimate subsurface flow: From global level to the State of Minnesota AU - B.A. Shmagin AU - R. Kanivetsky PY - 2002 DO - 10.1007/s00254-001-0495-6 UR - https://pubs.usgs.gov/publication/70024559 ID - 70024559 ER -