@misc{indiciae3e6a7f0bb67f,
  title = {Early Mesozoic basins workshop fieldtrip No. 1; Field guide to the igneous rocks of the southern Culpeper basin, Virginia},
  author = {Richard P. Tollo and David Gottfried and Albert J. Froelich},
  year = {1987},
  doi = {10.3133/ofr87251},
  url = {https://pubs.usgs.gov/publication/ofr87251},
  note = {Source identifier: ofr87251}
}