@misc{indiciae1229fdb8f420,
  title = {Costs and effectiveness of methods used for population estimates of bighorn sheep in Death Valley National Park},
  author = {C. L. Douglas and K.M. Longshore},
  year = {1995},
  url = {https://pubs.usgs.gov/publication/1007879},
  note = {Source identifier: 1007879}
}