TY  - RPRT
TI  - Haldane's rule and American black duck x mallard hybridization
AU  - R.E. Kirby
AU  - G.A. Sargeant
AU  - D. Shutler
PY  - 2004
DO  - 10.1139/z04-169
UR  - https://pubs.usgs.gov/publication/70026539
ID  - 70026539
ER  -