@misc{indiciae6ee8669f4e4f,
  title = {Use of burrow entrances to indicate densities of Townsend's ground squirrels},
  author = {Beatrice Van Horne and Robert L. Schooley and Steven T. Knick and Gail S. Olson and Kenneth P. Burnham},
  year = {1997},
  doi = {10.2307/3802418},
  url = {https://pubs.usgs.gov/publication/1015921},
  note = {Source identifier: 1015921}
}