@misc{indiciae472671bf876c,
  title = {Preliminary report on the geology of the Solok Quadrangle, West Sumatra},
  author = {Keith Robinson},
  year = {1974},
  doi = {10.3133/ofr74216},
  url = {https://pubs.usgs.gov/publication/ofr74216},
  note = {Source identifier: ofr74216}
}