@misc{indiciae15e157f89ad9,
  title = {Bedrock geologic map of the International Falls 1 degree by 2 degrees Quadrangle, Minnesota, United States and Ontario, Canada},
  author = {W. C. Day and D. L. Southwick and K. J. Schulz and T. L. Klein},
  year = {1990},
  doi = {10.3133/i1965b},
  url = {https://pubs.usgs.gov/publication/i1965B},
  note = {Source identifier: i1965B}
}