@misc{indiciae16ef68de73dc,
  title = {Water levels and artesian pressure in observation wells in the United States, 1949, Part 3, North-Central States},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1952},
  doi = {10.3133/wsp1158},
  url = {https://pubs.usgs.gov/publication/wsp1158},
  note = {Source identifier: wsp1158}
}