TY - RPRT TI - Preliminary evaluation of the ground-water-flow system in the Twin Cities Metropolitan area, Minnesota AU - John H. Guswa AU - Donald I. Siegel AU - Daniel C. Gillies PY - 1982 DO - 10.3133/wri8244 UR - https://pubs.usgs.gov/publication/wri8244 ID - wri8244 ER -