@misc{indiciae38ee7a147cf2,
  title = {MRDS-DTR; a mineral occurrence database for VAX DATATRIEVE based on the USGS Mineral Resource Data System},
  author = {C.N. Gerlitz},
  year = {1987},
  doi = {10.3133/ofr87657},
  url = {https://pubs.usgs.gov/publication/ofr87657},
  note = {Source identifier: ofr87657}
}