TY - RPRT TI - Hydrogeology and ground-water quality of confined aquifers in buried valleys in Rock County, Minnesota and Minnehaha County, South Dakota AU - R. J. Lindgren PY - 1997 DO - 10.3133/wri974029 UR - https://pubs.usgs.gov/publication/wri974029 ID - wri974029 ER -