@misc{indiciaecf12f223641a,
  title = {Checklist and "Pollard Walk" butterfly survey methods on public lands},
  author = {Ronald A. Royer and Jane E. Austin and Wesley E. Newton},
  year = {1998},
  doi = {10.1674/0003-0031(1998)140[0358:capwbs]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/1001787},
  note = {Source identifier: 1001787}
}