@misc{indiciaef2c474560eff,
  title = {Bedrock structural controls on the occurrence of sinkholes and springs in the Northern Great Valley Karst, Virginia and West Virginia},
  author = {Daniel H. Doctor and David J. Weary and Randall C. Orndorff and George E. Harlow and Mark D. Kozar and David L. Nelms},
  year = {2008},
  doi = {10.1061/9780784410035},
  url = {https://pubs.usgs.gov/publication/70195812},
  note = {Source identifier: 70195812}
}