@misc{indiciaedaa5c0442160,
  title = {Louisiana hydrologic atlas map No. 4; geohydrologic sections of Louisiana},
  author = {Charles W. Smoot},
  year = {1989},
  doi = {10.3133/wri874288},
  url = {https://pubs.usgs.gov/publication/wri874288},
  note = {Source identifier: wri874288}
}