@misc{indiciae48488a74b4f6,
  title = {Magnetization of Keweenawan rocks near Duluth, Minnesota},
  author = {C.E. Jahren},
  year = {1965},
  doi = {10.1190/1.1439660},
  url = {https://pubs.usgs.gov/publication/70221198},
  note = {Source identifier: 70221198}
}