@misc{indiciaeef1a44f2d806,
  title = {ERTS data user investigation to develop a multistage forest sampling inventory system},
  author = {Langley, P. G. and Vanroessel, J. W. and Wert, S. L.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730013556},
  note = {Source identifier: 19730013556}
}