@misc{indiciaeaafe2652d2e5,
  title = {Summary of microfossil investigations, April 1948 to April 1949 with special reference to the south Barrow and Simpson areas},
  author = {Helen N. Loeblich},
  year = {1949},
  doi = {10.3133/70210418},
  url = {https://pubs.usgs.gov/publication/70210418},
  note = {Source identifier: 70210418}
}