TY  - RPRT
TI  - Comparative toxicity of lead shot in black ducks (Anas rubripes) and mallards (Anas platyrhynchos)
AU  - Barnett A. Rattner
AU  - W. James Fleming
AU  - C.M. Bunck
PY  - 1989
DO  - 10.7589/0090-3558-25.2.175
UR  - https://pubs.usgs.gov/publication/5222246
ID  - 5222246
ER  -