@misc{indiciaeebff9c1c28bc,
  title = {Mineral resources of the Republic of Korea},
  author = {David Gallagher},
  year = {1968},
  doi = {10.3133/ofr6999},
  url = {https://pubs.usgs.gov/publication/ofr6999},
  note = {Source identifier: ofr6999}
}