@misc{indiciae35efd855fbe3,
  title = {Sand dunes on the central Delmarva Peninsula, Maryland and Delaware},
  author = {Charles Storrow Denny and James Patrick Owens},
  year = {1979},
  doi = {10.3133/pp1067c},
  url = {https://pubs.usgs.gov/publication/pp1067C},
  note = {Source identifier: pp1067C}
}