@misc{indiciae1d1ae68551c9,
  title = {Surface-geophysical techniques used to detect existing and infilled scour holes near bridge piers},
  author = {Gary Placzek and F.P. Haeni},
  year = {1995},
  doi = {10.3133/wri954009},
  url = {https://pubs.usgs.gov/publication/wri954009},
  note = {Source identifier: wri954009}
}