@misc{indiciaeef2f6b7448e2,
  title = {Quality of surface-water runoff in selected streams in the San Antonio segment of the Edwards aquifer recharge zone, Bexar County, Texas, 1997-2012},
  author = {Stephen P. Opsahl},
  year = {2012},
  doi = {10.3133/ds740},
  url = {https://pubs.usgs.gov/publication/ds740},
  note = {Source identifier: ds740}
}