@misc{indiciae97830f2d7070,
  title = {Traditional return of Cygnus columbianus columbianus to wintering areas in Maryland's Chesapeake Bay},
  author = {R. E. Munro},
  year = {1982},
  url = {https://pubs.usgs.gov/publication/5210461},
  note = {Source identifier: 5210461}
}