@misc{indiciae72578e1b9e1b,
  title = {Ground-water research in the United States},
  author = {O. M. Hackett},
  year = {1966},
  doi = {10.3133/cir527},
  url = {https://pubs.usgs.gov/publication/cir527},
  note = {Source identifier: cir527}
}