TY  - RPRT
TI  - Beaver assisted river valley formation
AU  - Cherie J. Westbrook
AU  - D.J. Cooper
AU  - Bruce W. Baker
PY  - 2011
DO  - 10.1002/rra.1359
UR  - https://pubs.usgs.gov/publication/70036703
ID  - 70036703
ER  -