@misc{indiciae34a752c87c7e,
  title = {An unusual pleomorphic sarcoma in a hybrid mallard},
  author = {Thomas J. Roffe},
  year = {1987},
  doi = {10.7589/0090-3558-23.2.334},
  url = {https://pubs.usgs.gov/publication/1003873},
  note = {Source identifier: 1003873}
}