@misc{indiciae4af9e0f5827e,
  title = {Geochemical and isotopic analyses of waters associated with the Edwards Limestone aquifer, central Texas},
  author = {F. J. Pearson and P.L. Rettman},
  year = {1976},
  url = {https://pubs.usgs.gov/publication/70176053},
  note = {Source identifier: 70176053}
}