@misc{indiciaeeb7f11db0d4a,
  title = {Pleistocene Proboscideans and Michigan salt deposits},
  author = {A.J. Holman and L.M. Abraczinskas and D.B. Westjohn},
  year = {1988},
  url = {https://pubs.usgs.gov/publication/70176809},
  note = {Source identifier: 70176809}
}