@misc{indiciaebaa8a7703e50,
  title = {Electrical-analog-model study of water resources of the Columbus area, Bartholomew County, Indiana},
  author = {Frank A. Watkins and J. E. Heisel},
  year = {1970},
  doi = {10.3133/wsp1981},
  url = {https://pubs.usgs.gov/publication/wsp1981},
  note = {Source identifier: wsp1981}
}