@misc{indiciae2b876170dd3f,
  title = {Water-Quality Assessment of the High Plains Aquifer, 1999-2004},
  author = {Peter B. McMahon and Kevin F. Dennehy and Breton W. Bruce and Jason J. Gurdak and Sharon L. Qi},
  year = {2007},
  doi = {10.3133/pp1749},
  url = {https://pubs.usgs.gov/publication/pp1749},
  note = {Source identifier: pp1749}
}