TY  - RPRT
TI  - Importance of individual species of predators on nesting success of ducks in the Canadian prairie pothole region
AU  - Douglas H. Johnson
AU  - Alan B. Sargeant
AU  - Raymond J. Greenwood
PY  - 1989
DO  - 10.1139/z89-043
UR  - https://pubs.usgs.gov/publication/1001544
ID  - 1001544
ER  -