@misc{indiciaecb40edd0fc9d,
  title = {Map showing trace-metal content and texture of surficial bottom sediments in the Port Isabel 1 degree x 2 degrees quadrangle, Texas},
  author = {H. L. Berryhill and A. R. Trippet},
  year = {1980},
  doi = {10.3133/i1254b},
  url = {https://pubs.usgs.gov/publication/i1254B},
  note = {Source identifier: i1254B}
}