@misc{indiciae89a0031ed1d6,
  title = {Photomorphic analysis techniques: An interim spatial analysis using satellite remote sensor imagery and historical data},
  author = {Keuper, H. R. and Peplies, R. W. and Gillooly, R. P.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770015637},
  note = {Source identifier: 19770015637}
}