@misc{indiciaef0577380c706,
  title = {Base of principal aquifer for the Elkhorn-Loup model area, North-Central Nebraska},
  author = {V. L. McGuire and Steven M. Peterson},
  year = {2008},
  doi = {10.3133/sim3042},
  url = {https://pubs.usgs.gov/publication/sim3042},
  note = {Source identifier: sim3042}
}