TY  - RPRT
TI  - A stochastic population model of mid-continental mallards
AU  - Rolf R. Koford
AU  - J.R. Sauer
AU  - Douglas H. Johnson
AU  - J.D. Nichols
AU  - M.D. Samuel
PY  - 1992
UR  - https://pubs.usgs.gov/publication/5210569
ID  - 5210569
ER  -