@misc{indiciae184b1a974adf,
  title = {Modification of the glacial chronology of the San Juan Mountains, Colorado},
  author = {G.M. Richmond},
  year = {1954},
  doi = {10.1126/science.119.3096.614.b},
  url = {https://pubs.usgs.gov/publication/70011010},
  note = {Source identifier: 70011010}
}