@misc{indiciaefbc14bf13960,
  title = {The Conservation Reserve Program and grassland birds},
  author = {Douglas H. Johnson and Michael D. Schwartz},
  year = {2003},
  doi = {10.1046/j.1523-1739.1993.740934.x},
  url = {https://pubs.usgs.gov/publication/1001150},
  note = {Source identifier: 1001150}
}