@misc{indiciaea98ca2f1881e,
  title = {Thirty-eighth breeding bird census. 20. Hickory-oak-ash floodplain forest},
  author = {C.S. Robbins},
  year = {1974},
  url = {https://pubs.usgs.gov/publication/5220888},
  note = {Source identifier: 5220888}
}