@misc{indiciae46a18c24dd6b,
  title = {RESEARCH FOR THE USGS DIGITAL CARTOGRAPHY PROGRAM.},
  author = {Robert B. McEwen and Lowell E. Starr},
  year = {1984},
  url = {https://pubs.usgs.gov/publication/70012706},
  note = {Source identifier: 70012706}
}