@misc{indiciae76cc6433f0a8,
  title = {The Edwards aquifer, extremely productive, but....a sole-source water supply for San Antonio and surrounding counties in south-central Texas},
  author = {C.R. Burchett and P.L. Rettman and C.W. Boning},
  year = {1986},
  url = {https://pubs.usgs.gov/publication/70176056},
  note = {Source identifier: 70176056}
}