@misc{indiciae387f482dc21e,
  title = {Illinois ground-water observation network; a preliminary planning document for network design},
  author = {L.R. Frost and Michael O’Hearn and J.P. Gibb and M.G. Sherrill},
  year = {1984},
  doi = {10.3133/ofr84584},
  url = {https://pubs.usgs.gov/publication/ofr84584},
  note = {Source identifier: ofr84584}
}