@misc{indiciae1d16ca156ae9,
  title = {Digital computer terrain mapping from multispectral data, and evaluation of proposed Earth Resources Technology Satellite (ERTS) data channels, Yellowstone National Park preliminary report},
  author = {Harry Wynn Smedes and K. L. Pierce and Marc G. Tanguay and R.M. Hoffer},
  year = {1970},
  doi = {10.3133/ofr70307},
  url = {https://pubs.usgs.gov/publication/ofr70307},
  note = {Source identifier: ofr70307}
}