@misc{indiciaef1df2380ed54,
  title = {Pollen and spores of terrestrial plants},
  author = {Christopher E. Bernhardt and Debra A. Willard},
  year = {2015},
  doi = {10.1002/9781118452547.ch14},
  url = {https://pubs.usgs.gov/publication/70156817},
  note = {Source identifier: 70156817}
}