@misc{indiciae921f9730e440,
  title = {Water-table map of Waukesha County, Wisconsin},
  author = {J. B. Gonthier},
  year = {1979},
  doi = {10.3133/wri7943},
  url = {https://pubs.usgs.gov/publication/wri7943},
  note = {Source identifier: wri7943}
}