@misc{indiciaec42693209fdc,
  title = {Water-resources investigations of the U.S. Geological Survey in Iowa; fiscal year 1981},
  author = {I. L. Burmeister and L.G. Hecht},
  year = {1981},
  doi = {10.3133/ofr81349},
  url = {https://pubs.usgs.gov/publication/ofr81349},
  note = {Source identifier: ofr81349}
}