@misc{indiciaeaef3bdf1c050,
  title = {Llano Grande Lake bottom sediments; a chronicle of water-quality changes in the Arroyo Colorado, South Texas, 1989-2001},
  author = {Barbara June Mahler and Peter C. Van Metre},
  year = {2002},
  doi = {10.3133/fs06502},
  url = {https://pubs.usgs.gov/publication/fs06502},
  note = {Source identifier: fs06502}
}