@misc{indiciae39cee112cad7,
  title = {Geology of the Buchanan Quadrangle, Liberia},
  author = {Russell G. Tysdal},
  year = {1974},
  doi = {10.3133/ofr74308},
  url = {https://pubs.usgs.gov/publication/ofr74308},
  note = {Source identifier: ofr74308}
}