@misc{indiciaef769152e7d9f,
  title = {A guide to obtaining information from the USGS 1978},
  author = {Paul F. Clarke and Helen E. Hodgson and Gary W. North},
  year = {1978},
  doi = {10.3133/cir777},
  url = {https://pubs.usgs.gov/publication/cir777},
  note = {Source identifier: cir777}
}