@misc{indiciaeb6e282e95cb8,
  title = {Heavy mineral prospecting in Pakistan},
  author = {Karl W. Stauffer and James Alfred Calkins},
  year = {1975},
  doi = {10.3133/ofr75359},
  url = {https://pubs.usgs.gov/publication/ofr75359},
  note = {Source identifier: ofr75359}
}