@misc{indiciae68f164f3ee50,
  title = {Element concentrations in tree swallows (Tachycineta bicolor) from the U.S. and Binational Great Lakes’ areas of concern},
  author = {Thomas W. Custer and Christine M. Custer and Paul M. Dummer and Diana R. Goldberg and J. Christian Franson},
  year = {2019},
  doi = {10.1007/s00244-019-00601-4},
  url = {https://pubs.usgs.gov/publication/70202718},
  note = {Source identifier: 70202718}
}