@misc{indiciae6141a485891c,
  title = {Use of urine in snow to indicate condition of wolves},
  author = {L. David Mech and Ulysses S. Seal and Glenn D. DelGiudice},
  year = {1987},
  doi = {10.2307/3801620},
  url = {https://pubs.usgs.gov/publication/5222180},
  note = {Source identifier: 5222180}
}