@misc{indiciae8b21bafb031a,
  title = {Geophysical well logs for drill hole UPH-3, Stephenson County, Illinois},
  author = {Jeffrey J. Daniels and J. H. Scott and G.R. Olhoeft},
  year = {1981},
  doi = {10.3133/ofr81237},
  url = {https://pubs.usgs.gov/publication/ofr81237},
  note = {Source identifier: ofr81237}
}