TY  - RPRT
TI  - Frequency of debris flows in Grand Canyon
AU  - Robert H. Webb
AU  - Peter G. Griffiths
AU  - Tillie A. Klearman
PY  - 2003
DO  - 10.3133/fs06503
UR  - https://pubs.usgs.gov/publication/fs06503
ID  - fs06503
ER  -