TY - RPRT TI - Use of packrat middens to determine rates of cliff retreat in the eastern Grand Canyon, Arizona AU - Kenneth L. Cole AU - Larry Mayer PY - 1982 DO - 10.1130/0091-7613(1982)10<597:uopmtd>2.0.co;2 UR - https://pubs.usgs.gov/publication/70188986 ID - 70188986 ER -