@misc{indiciae5d38ae810b61,
  title = {Preliminary bedrock geologic map of the Roseau 1° x 2° quadrangle, Minnesota, U.S.A., and Ontario, Canada},
  author = {Warren C. Day and K. J. Schulz and Terry L. Klein},
  year = {1991},
  doi = {10.3133/ofr90544a},
  url = {https://pubs.usgs.gov/publication/ofr90544A},
  note = {Source identifier: ofr90544A}
}