@misc{indiciaefbc198d39011,
  title = {Permit requirements for energy and other natural resources for the State of Illinois},
  author = {Indiana University School of Public and Environmental Affairs},
  year = {1981},
  doi = {10.3133/ofr811257},
  url = {https://pubs.usgs.gov/publication/ofr811257},
  note = {Source identifier: ofr811257}
}