TY - RPRT TI - Water levels and artesian pressure in observation wells in the United States, 1948, Part 3, North-Central States AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1951 DO - 10.3133/wsp1128 UR - https://pubs.usgs.gov/publication/wsp1128 ID - wsp1128 ER -