@misc{indiciae9fe62a413908,
  title = {Disturbance of soil and vegetation by the Johnson Valley-Parker motorcycle race of October 8, 1983, in Wilderness Study Area 304A, California and vicinity},
  author = {H. G. Wilshire},
  year = {1984},
  doi = {10.3133/ofr84277},
  url = {https://pubs.usgs.gov/publication/ofr84277},
  note = {Source identifier: ofr84277}
}