@misc{indiciaeac54eb038bbc,
  title = {Preliminary geologic map of the Witch Lake Quadrangle, Michigan},
  author = {William F. Cannon and J. S. Klasner},
  year = {1974},
  doi = {10.3133/ofr741014},
  url = {https://pubs.usgs.gov/publication/ofr741014},
  note = {Source identifier: ofr741014}
}