@misc{indiciae3c4b3ced08c3,
  title = {Preliminary engineering geologic maps of the proposed Trans-Alaska pipeline route, Gulkana Quadrangle},
  author = {O. J. Ferrians},
  year = {1971},
  doi = {10.3133/ofr71102},
  url = {https://pubs.usgs.gov/publication/ofr71102},
  note = {Source identifier: ofr71102}
}