TY  - RPRT
TI  - Population ecology of the mallard: III. Bibliography of published research and management findings
AU  - David R. Anderson
AU  - Patricia Ann Skaptason
AU  - Kathleen C. Fahey
AU  - Charles J. Henny
PY  - 1974
UR  - https://pubs.usgs.gov/publication/rp119
ID  - rp119
ER  -