@misc{indiciae0ea53265b4f9,
  title = {A wireline piston core barrel for sampling cohesionless sand and gravel below the water table},
  author = {Michael M. Zapico and Samuel Vales and John A. Cherry},
  year = {2007},
  doi = {10.1111/j.1745-6592.1987.tb01077.x},
  url = {https://pubs.usgs.gov/publication/70185547},
  note = {Source identifier: 70185547}
}