@misc{indiciae3ff3cead491a,
  title = {Quality of water in the Red River alluvial aquifer, Shreveport, to the mouth of the Black River, Louisiana},
  author = {A. H. Ludwig},
  year = {1974},
  doi = {10.3133/70045954},
  url = {https://pubs.usgs.gov/publication/70045954},
  note = {Source identifier: 70045954}
}