@misc{indiciae594d86e6cf83,
  title = {Industrial limestones and dolomites in Virginia: northern and central parts of the Shenandoah Valley},
  author = {R.S. Edmundson},
  year = {1945},
  url = {https://pubs.usgs.gov/publication/70198526},
  note = {Source identifier: 70198526}
}