@misc{indiciae584195ecf7b6,
  title = {Generalized potentiometric surface of aquifers of Pleistocene age, Southern Louisiana, 1980},
  author = {Angel Martin and Charles D. Whiteman},
  year = {1985},
  doi = {10.3133/wri844331},
  url = {https://pubs.usgs.gov/publication/wri844331},
  note = {Source identifier: wri844331}
}