@misc{indiciae6ccd7514ca88,
  title = {Second EROS/AID international course on remote sensing},
  author = {Donald G. Orr},
  year = {1975},
  doi = {10.3133/ofr7548},
  url = {https://pubs.usgs.gov/publication/ofr7548},
  note = {Source identifier: ofr7548}
}