TY  - RPRT
TI  - Waterbirds of the Chesapeake Bay region: An introduction
AU  - R.M. Erwin
AU  - G.M. Haramis
AU  - Matthew C. Perry
AU  - B.D. Watts
PY  - 2007
UR  - https://pubs.usgs.gov/publication/5211414
ID  - 5211414
ER  -