TY  - RPRT
TI  - Efficiency of adaptive cluster sampling for estimating density of wintering waterfowl
AU  - D. R. Smith
AU  - M.J. Conroy
AU  - D.H. Brakhage
PY  - 1995
DO  - 10.2307/2532964
UR  - https://pubs.usgs.gov/publication/1014785
ID  - 1014785
ER  -