@misc{indiciae1e218124cfe0,
  title = {United States Geological Survey activities in Iowa},
  author = {R. G. Middlemis-Brown},
  year = {1995},
  doi = {10.3133/ofr95392},
  url = {https://pubs.usgs.gov/publication/ofr95392},
  note = {Source identifier: ofr95392}
}