@misc{indiciaedc7cefb985c4,
  title = {Columbia Glacier, Alaska, photogrammetry data set, 1981-82 and 1984-85},
  author = {R. M. Krimmel},
  year = {1987},
  doi = {10.3133/ofr87219},
  url = {https://pubs.usgs.gov/publication/ofr87219},
  note = {Source identifier: ofr87219}
}