@misc{indiciae949c31b8edaa,
  title = {[Book review] North American terrestrial vegetation, by Michael G. Barbour and William Dwight Billings},
  author = {W. L. Halvorson},
  year = {1989},
  url = {https://pubs.usgs.gov/publication/1015629},
  note = {Source identifier: 1015629}
}