@misc{indiciae0e0c85fff2c0,
  title = {Bed-material-sampler support},
  author = {W.L. Haushild and B.R. Ringen},
  year = {1957},
  doi = {10.3133/ofr5752},
  url = {https://pubs.usgs.gov/publication/ofr5752},
  note = {Source identifier: ofr5752}
}