@misc{indiciae1e47fd1b6b31,
  title = {Preliminary raptor surveys in western Mongolia},
  author = {D. H. Ellis and Merlin H. Ellis and Pu Tsengeg},
  year = {1995},
  url = {https://pubs.usgs.gov/publication/5222614},
  note = {Source identifier: 5222614}
}