TY  - RPRT
TI  - The relationship between harvest and survival rates of mallards: A straightforward approach with partitioned data sets
AU  - James D. Nichols
AU  - James E. Hines
PY  - 1983
DO  - 10.2307/3808506
UR  - https://pubs.usgs.gov/publication/5221836
ID  - 5221836
ER  -