@misc{indiciaebb55ae06ef89, title = {Water levels and artesian pressure in observation wells in the United States, 1948, Part 3, North-Central States}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1951}, doi = {10.3133/wsp1128}, url = {https://pubs.usgs.gov/publication/wsp1128}, note = {Source identifier: wsp1128} }