@misc{indiciae67e71cb2ffaf,
  title = {Land use series, Wilmington, Delaware, New Jersey, Pennsylvania, Maryland},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1976},
  doi = {10.3133/ofr76636},
  url = {https://pubs.usgs.gov/publication/ofr76636},
  note = {Source identifier: ofr76636}
}