@misc{indiciae77a9d82d29ab,
  title = {Range expansion by wild hogs across the central United States},
  author = {P. S. Gipson and B. Hlavachick and T. Berger},
  year = {1998},
  url = {https://pubs.usgs.gov/publication/70020292},
  note = {Source identifier: 70020292}
}