TY  - RPRT
TI  - Post-breeding activities of mallards and wood ducks in north-central Minnesota
AU  - D.S. Gilmer
AU  - R.E. Kirby
AU  - I.J. Ball
AU  - J. H. Riechmann
PY  - 1977
DO  - 10.2307/3800504
UR  - https://pubs.usgs.gov/publication/1001643
ID  - 1001643
ER  -