@misc{indiciaeb47858c53fde,
  title = {A tapestry of time and terrain},
  author = {J.F. Vigil and R.J. Pike and D. G. Howell},
  year = {2000},
  doi = {10.3133/i2720},
  url = {https://pubs.usgs.gov/publication/i2720},
  note = {Source identifier: i2720}
}