@misc{indiciae90a61850acfa, title = {Water levels and artesian pressure in observation wells in the United States, 1945, Part 3, North-Central States}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1948}, doi = {10.3133/wsp1025}, url = {https://pubs.usgs.gov/publication/wsp1025}, note = {Source identifier: wsp1025} }