@misc{indiciae9d545f94c14a,
  title = {Contributions to economic geology (short papers and preliminary reports), 1931-32 : Part I. - Metals and nonmetals except fuels},
  author = {Gerald Francis Loughlin},
  year = {1933},
  doi = {10.3133/b830},
  url = {https://pubs.usgs.gov/publication/b830},
  note = {Source identifier: b830}
}