TY  - RPRT
TI  - A test of the variable circular-plot method where exact density of a bird population was known
AU  - Jay T. Nelson
AU  - Steven G. Fancy
PY  - 1999
DO  - 10.1071/pc990139
UR  - https://pubs.usgs.gov/publication/70179249
ID  - 70179249
ER  -