@misc{indiciaec3290ffc88f0,
  title = {Geology and mineral deposits of the Roseland District of central Virginia},
  author = {Norman Herz and E. R. Force},
  year = {1987},
  doi = {10.3133/pp1371},
  url = {https://pubs.usgs.gov/publication/pp1371},
  note = {Source identifier: pp1371}
}