@misc{indiciae837bdca991be,
  title = {Geological map and geophysical interpretation of the Witch Lake Quadrangle, Marquette, Iron, and Baraga Counties, Michigan},
  author = {W.F. Cannon and J. S. Klasner},
  year = {1976},
  doi = {10.3133/i987},
  url = {https://pubs.usgs.gov/publication/i987},
  note = {Source identifier: i987}
}