@misc{indiciaef652fc1603ed,
  title = {An approach to the field study of hydraulic gradients in variable-salinity ground water},
  author = {J.J. Hickey},
  year = {2005},
  doi = {10.1111/j.1745-6584.1989.tb01974.x},
  url = {https://pubs.usgs.gov/publication/70015257},
  note = {Source identifier: 70015257}
}