@misc{indiciae4300e2271b06,
  title = {Karst hydrogeology in the United States},
  author = {Dallas L. Peck and Joseph W. Troester and John E. Moore},
  year = {1988},
  doi = {10.3133/ofr88476},
  url = {https://pubs.usgs.gov/publication/ofr88476},
  note = {Source identifier: ofr88476}
}