@misc{indiciae61f0ef547107, title = {Water levels and artesian pressures in observation wells in the United States, 1951, Part 3, North-Central States}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1954}, doi = {10.3133/wsp1193}, url = {https://pubs.usgs.gov/publication/wsp1193}, note = {Source identifier: wsp1193} }