@misc{indiciae53486fc108e2,
  title = {A technique using diazo film for isolating areas of spectral similarity},
  author = {Donald B. Segal and Melvin H. Podwysocki},
  year = {1980},
  doi = {10.3133/ofr801267},
  url = {https://pubs.usgs.gov/publication/ofr801267},
  note = {Source identifier: ofr801267}
}