@misc{indiciae19b056b841c7,
  title = {Volume XII: Fresh-water rhizopods of North America},
  author = {Ferdinand Vandeveer Hayden and Joseph Leidy},
  year = {1879},
  doi = {10.3133/70038962},
  url = {https://pubs.usgs.gov/publication/70038962},
  note = {Source identifier: 70038962}
}