@misc{indiciae0c55a7aebc79,
  title = {Chemical analyses of water from observation wells in the Edwards and associated limestones, San Antonio area, Texas, 1967},
  author = {Paul Rettman},
  year = {1968},
  url = {https://pubs.usgs.gov/publication/70175658},
  note = {Source identifier: 70175658}
}