@misc{indiciaee8c9d8461a06,
  title = {A topographic field trip of Washington, D.C. - a cartographic multimedia application},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1998},
  doi = {10.3133/fs02598},
  url = {https://pubs.usgs.gov/publication/fs02598},
  note = {Source identifier: fs02598}
}