@misc{indiciae3d7043ef9d08,
  title = {Bedrock geology at the south-central part of the North Range, Cuyuna district, Minnesota},
  author = {R. G. Schmidt and C. E. Dutton},
  year = {1957},
  doi = {10.3133/mf99},
  url = {https://pubs.usgs.gov/publication/mf99},
  note = {Source identifier: mf99}
}