@misc{indiciae5210ffa51f44,
  title = {Christmas bird counts -1946. Port Tobacco (Charles Co.), Md},
  author = {D.L. Allen and I.N. Gabrielson and A.L. Nelson and R. E. Stewart and F.M. Uhler},
  year = {1947},
  url = {https://pubs.usgs.gov/publication/5222545},
  note = {Source identifier: 5222545}
}