TY  - RPRT
TI  - Aggressive encounters between tundra swans and greater white-fronted geese during brood rearing
AU  - Craig R. Ely
AU  - David A. Budeau
AU  - Una G. Swain
PY  - 1987
DO  - 10.2307/1368496
UR  - https://pubs.usgs.gov/publication/70182082
ID  - 70182082
ER  -