@misc{indiciae18c6e7a507ee,
  title = {MRDS-REV; mineral occurrence deposit data base for microcomputer},
  author = {P. G. Schruben},
  year = {1985},
  doi = {10.3133/ofr8634},
  url = {https://pubs.usgs.gov/publication/ofr8634},
  note = {Source identifier: ofr8634}
}