TY  - RPRT
TI  - Spring and summer survival of female mallards from northcentral Minnesota
AU  - Ronald E. Kirby
AU  - Lewis M. Cowardin
PY  - 1986
DO  - 10.2307/3801485
UR  - https://pubs.usgs.gov/publication/1001443
ID  - 1001443
ER  -