@misc{indiciae6653161161c7,
  title = {Use of packrat middens to determine rates of cliff retreat in the eastern Grand Canyon, Arizona},
  author = {Kenneth L. Cole and Larry Mayer},
  year = {1982},
  doi = {10.1130/0091-7613(1982)10<597:uopmtd>2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70188986},
  note = {Source identifier: 70188986}
}