@misc{indiciaef999c5285cf1,
  title = {Crossbedding of the Potomac Formation in Fairfax County, Virginia},
  author = {Gordon Whitney Weir},
  year = {1976},
  doi = {10.3133/ofr76193},
  url = {https://pubs.usgs.gov/publication/ofr76193},
  note = {Source identifier: ofr76193}
}