@misc{indiciae4c7cc4415dd9,
  title = {Corals from well cores of Madison group, Williston basin},
  author = {William Jasper Sando},
  year = {1960},
  doi = {10.3133/b1071f},
  url = {https://pubs.usgs.gov/publication/b1071F},
  note = {Source identifier: b1071F}
}