@misc{indiciaeea4c6e7437a0,
  title = {Comparison of aerial survey procedures for estimating polar bear density: Results of pilot studies in northern Alaska},
  author = {Lyman L. McDonald and Gerald W. Garner},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/70186547},
  note = {Source identifier: 70186547}
}