@misc{indiciae3367338f4fba,
  title = {Geochemical prospecting investigations in the Nyeba lead-zinc district, Nigeria},
  author = {H. E. Hawkes},
  year = {1954},
  doi = {10.3133/b1000b},
  url = {https://pubs.usgs.gov/publication/b1000B},
  note = {Source identifier: b1000B}
}