@misc{indiciae76507a5837c0,
  title = {Twenty-sixth winter bird-population study. 10. Upland tulip-tree-maple-oak forest},
  author = {C.S. Robbins},
  year = {1973},
  url = {https://pubs.usgs.gov/publication/5220890},
  note = {Source identifier: 5220890}
}