@misc{indiciae7d72afdf5009,
  title = {Nitrate in the ground water of Texas},
  author = {William O. George and Warren W. Hastings},
  year = {2014},
  doi = {10.1029/tr032i003p00450},
  url = {https://pubs.usgs.gov/publication/70221622},
  note = {Source identifier: 70221622}
}