@misc{indiciaef7228ea20fcb,
  title = {Time-of-travel of solutes in the Trinity River basin, Texas, September 1973 and July-August 1974},
  author = {R.H. Ollman},
  year = {1975},
  doi = {10.3133/ofr75558},
  url = {https://pubs.usgs.gov/publication/ofr75558},
  note = {Source identifier: ofr75558}
}