TY  - RPRT
TI  - Effects of number of circular plots on estimates of avian density and species richness
AU  - M.L. Morrison
AU  - R.W. Mannan
AU  - G.L. Dorsey
PY  - 1981
UR  - https://pubs.usgs.gov/publication/5210264
ID  - 5210264
ER  -