@misc{indiciae134bb3886242,
  title = {Lake Superior geological and geophysical data sources},
  author = {R. J. Wold and D. R. Hutchinson},
  year = {1979},
  doi = {10.3133/mf1085},
  url = {https://pubs.usgs.gov/publication/mf1085},
  note = {Source identifier: mf1085}
}