@misc{indiciaeff1284dfe224,
  title = {Characterizing ground water flow in the municipal well fields of Cedar Rapids, Iowa, with selected environmental tracers},
  author = {Robert A. Boyd},
  year = {2007},
  doi = {10.1111/j.1752-1688.1998.tb00950.x},
  url = {https://pubs.usgs.gov/publication/70020869},
  note = {Source identifier: 70020869}
}