@misc{indiciaeabaa7354bb68,
  title = {Geographic map of the Voinjama Quadrangle, Liberia},
  author = {Liberian Geological Survey},
  year = {1973},
  doi = {10.3133/i771a},
  url = {https://pubs.usgs.gov/publication/i771A},
  note = {Source identifier: i771A}
}