TY  - RPRT
TI  - Potential roadside biases due to habitat changes along Breeding Bird Survey routes
AU  - C.M.E. Keller
AU  - J.T. Scallan
PY  - 1999
DO  - 10.2307/1370445
UR  - https://pubs.usgs.gov/publication/5223808
ID  - 5223808
ER  -