@misc{indiciae8a0ccee68757,
  title = {The sangdong tungsten deposit, southern Korea},
  author = {M. R. Klepper},
  year = {1947},
  doi = {10.2113/gsecongeo.42.5.465},
  url = {https://pubs.usgs.gov/publication/70206755},
  note = {Source identifier: 70206755}
}