@misc{indiciaee165e8242a96,
  title = {Exploration for porphyry copper deposits in Pakistan using digital processing of ERTS-1 data},
  author = {Robert George Schmidt},
  year = {1975},
  doi = {10.3133/ofr7518},
  url = {https://pubs.usgs.gov/publication/ofr7518},
  note = {Source identifier: ofr7518}
}