@misc{indiciaeb72d03f8b7eb,
  title = {Maps Showing Distribution of Heavy Minerals on the South Texas Outer Continental Shelf},
  author = {Gerald L. Shideler and Romeo M. Flores},
  year = {1976},
  doi = {10.3133/mf841},
  url = {https://pubs.usgs.gov/publication/mf841},
  note = {Source identifier: mf841}
}