TY  - RPRT
TI  - Effects of reintroduced beaver ( Castor canadensis ) on riparian bird community structure along the upper San Pedro River, southeastern Arizona and northern Sonora, Mexico
AU  - Glenn E. Johnson
AU  - Charles van Riper
PY  - 2014
DO  - 10.3133/ofr20141121
UR  - https://pubs.usgs.gov/publication/ofr20141121
ID  - ofr20141121
ER  -