TY  - RPRT
TI  - Mallard brood survival in prairie pothole landscapes
AU  - Gary L. Krapu
AU  - P.J. Pietz
AU  - D.A. Brandt
AU  - R. R. Cox
PY  - 2000
UR  - https://pubs.usgs.gov/publication/1001763
ID  - 1001763
ER  -