@misc{indiciae7f8a5637e44f,
  title = {Do economic values and expenditures for viewing waterfowl in the U.S. differ among species?},
  author = {John Loomis and Michelle Haefele and James Dubovsky and Aaron M. Lien and Wayne E. Thogmartin and James E. Diffendorfer and Dale D. Humburg and Brady J. Mattsson and Kenneth J. Bagstad and Darius J. Semmens and Laura Lopez-Hoffman and Robert Merideth},
  year = {2018},
  doi = {10.1080/10871209.2018.1496371},
  url = {https://pubs.usgs.gov/publication/70206268},
  note = {Source identifier: 70206268}
}