@misc{indiciaec0047e0ac70e,
  title = {Effect of phosphorus deficiency on spectral reflectance and morphology of soybean plants},
  author = {N.M. Milton and B. A. Eiswerth and C. M. Ager},
  year = {1991},
  doi = {10.1016/0034-4257(91)90034-4},
  url = {https://pubs.usgs.gov/publication/70016668},
  note = {Source identifier: 70016668}
}