@misc{indiciaebfce29aaedde,
  title = {Morphological variation and zoogeography of racers ( Coluber constrictor ) in the central Rocky Mountains},
  author = {Paul Stephen Corn and R. Bruce Bury},
  year = {1986},
  url = {https://pubs.usgs.gov/publication/70121080},
  note = {Source identifier: 70121080}
}