@misc{indiciae834a5a9d8738,
  title = {Geologic map of the Piedmont in the Savage and Relay quadrangles, Howard, Baltimore, and Anne Arundel Counties, Maryland},
  author = {Avery A. Drake},
  year = {1998},
  doi = {10.3133/ofr98757},
  url = {https://pubs.usgs.gov/publication/ofr98757},
  note = {Source identifier: ofr98757}
}