@misc{indiciae47a721ba5a11,
  title = {Heavy-mineral variability in beach and dune sands in the vicinity of the mouth of the Columbia River},
  author = {Gretchen Luepke},
  year = {1982},
  doi = {10.3133/ofr821091},
  url = {https://pubs.usgs.gov/publication/ofr821091},
  note = {Source identifier: ofr821091}
}