@misc{indiciaed439f559db0f,
  title = {Preliminary geologic map of the Mount Katmai Quadrangle and portions of the Afognak and Naknek quadrangles, Alaska},
  author = {J.R. Riehle and R. L. Detterman and M. E. Yount and J. W. Miller},
  year = {1987},
  doi = {10.3133/ofr87593},
  url = {https://pubs.usgs.gov/publication/ofr87593},
  note = {Source identifier: ofr87593}
}