@misc{indiciae0d862f8670fa,
  title = {Calculations on the extent of spruce budworm control by insectivorous birds},
  author = {J.L. George and R.T. Mitchell},
  year = {1948},
  doi = {10.1093/jof/46.6.454},
  url = {https://pubs.usgs.gov/publication/5221336},
  note = {Source identifier: 5221336}
}