@misc{indiciae100716b550ee,
  title = {Satellite image map N.W. Frontier, Pakistan},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1997},
  doi = {10.3133/i2587b},
  url = {https://pubs.usgs.gov/publication/i2587B},
  note = {Source identifier: i2587B}
}