TY  - RPRT
TI  - A double-observer method to estimate detection rate during aerial waterfowl surveys
AU  - M.D. Koneff
AU  - J. Andrew Royle
AU  - M.C. Otto
AU  - J.S. Wortham
AU  - J.K. Bidwell
PY  - 2008
UR  - https://pubs.usgs.gov/publication/5224909
ID  - 5224909
ER  -