@misc{indiciae175adad5cf92,
  title = {Thickness and character of the Traverse group and Dundee formation in southwestern Michigan},
  author = {G. V. Cohee},
  year = {1944},
  doi = {10.3133/oc4},
  url = {https://pubs.usgs.gov/publication/oc4},
  note = {Source identifier: oc4}
}