@misc{indiciae4aaf9d68a033,
  title = {Exploratory drilling for ground water in the Mountain Iron-Virginia area, St. Louis County, Minnesota},
  author = {R. D. Cotter and J.E. Rogers},
  year = {1961},
  doi = {10.3133/wsp1539a},
  url = {https://pubs.usgs.gov/publication/wsp1539A},
  note = {Source identifier: wsp1539A}
}