@misc{indiciaec55dae4b98a9,
  title = {Haydite shale in the Sutton and Kings River areas of the Matanuska Valley, Alaska},
  author = {R.A. Eckhart},
  year = {1952},
  doi = {10.3133/ofr5239},
  url = {https://pubs.usgs.gov/publication/ofr5239},
  note = {Source identifier: ofr5239}
}