@misc{indiciae0cece64e452a,
  title = {Program for technical assistance in the analysis of land resources},
  author = {Eddie L. Schwertz and George L. Loelkes and Stephan W. Miller},
  year = {1981},
  doi = {10.3133/ofr81701},
  url = {https://pubs.usgs.gov/publication/ofr81701},
  note = {Source identifier: ofr81701}
}