@misc{indiciaebf569e826948,
  title = {Paleozoic corals of Alaska},
  author = {Michael Churkin and W. A. Oliver and C.W. Merriam and A. K. Armstrong and C. L. Rowett},
  year = {1975},
  doi = {10.3133/pp823ad},
  url = {https://pubs.usgs.gov/publication/pp823AD},
  note = {Source identifier: pp823AD}
}