TY  - RPRT
TI  - Population ecology of migratory birds. Papers from a symposium held at the Migratory Bird Populations Station, Laurel, Maryland, 9-10 October 1969
AU  - T.S. Baskett
PY  - 1972
UR  - https://pubs.usgs.gov/publication/wrr2
ID  - wrr2
ER  -