@misc{indiciae167bcd7052f1,
  title = {Geologic map of the Muddy Creek drainage basin within the Singers Glen Quadrangle, Rockingham County, Virginia},
  author = {Randall C. Orndorff},
  year = {1995},
  doi = {10.3133/ofr95629},
  url = {https://pubs.usgs.gov/publication/ofr95629},
  note = {Source identifier: ofr95629}
}