@misc{indiciae7a3fb7c25c52,
  title = {Geochemical survey of the Burden Falls Roadless Area, Pope County, Illinois},
  author = {J. S. Klasner and G.W. Day},
  year = {1985},
  doi = {10.3133/mf1565b},
  url = {https://pubs.usgs.gov/publication/mf1565B},
  note = {Source identifier: mf1565B}
}