@misc{indiciae008c5f900e04,
  title = {Winter fish populations in probable locations of air bubblers in the St. Mary's River-Lake Superior area},
  author = {Michael D. Dahlberg and James W. Duncan and John M. Burke},
  year = {1980},
  url = {https://pubs.usgs.gov/publication/fwsobs80\_60},
  note = {Source identifier: fwsobs80\_60}
}