@misc{indiciae463268b6bd37,
  title = {Petrology of pre-Selma strata from core holes in western Alabama},
  author = {Richard E. Bergenback},
  year = {1964},
  doi = {10.3133/b1160b},
  url = {https://pubs.usgs.gov/publication/b1160B},
  note = {Source identifier: b1160B}
}