@misc{indiciae0bb58aea297f,
  title = {The physiographic provinces of Alaska},
  author = {Clyde Wahrhaftig},
  year = {1960},
  doi = {10.3133/ofr60146},
  url = {https://pubs.usgs.gov/publication/ofr60146},
  note = {Source identifier: ofr60146}
}