@misc{indiciae071a2ea607cc,
  title = {Gopherus agassizii (desert tortoise). Burrow collapse},
  author = {Caleb L. Loughran and Joshua Ennen and Jeffrey E. Lovich},
  year = {2011},
  url = {https://pubs.usgs.gov/publication/70042405},
  note = {Source identifier: 70042405}
}