@misc{indiciae2d13e6b27ca4,
  title = {The influence of hydraulics on boat trajectories and boating accidents on the Colorado River, Grand Canyon, Arizona},
  author = {Margie Marley},
  year = {1987},
  doi = {10.3133/ofr87576},
  url = {https://pubs.usgs.gov/publication/ofr87576},
  note = {Source identifier: ofr87576}
}