@misc{indiciae9393cd837cdb,
  title = {Bibliography of North American geology for 1940 and 1941},
  author = {Emma Mertins Thom},
  year = {1942},
  doi = {10.3133/b938},
  url = {https://pubs.usgs.gov/publication/b938},
  note = {Source identifier: b938}
}