TY  - RPRT
TI  - Biochemical identification of mallard-black duck hybrids through a breeding program and in nature
AU  - R.P. Morgan
AU  - D. W. Meritt
AU  - S. B. Block
AU  - M. Cole
PY  - 1978
UR  - https://pubs.usgs.gov/publication/1001377
ID  - 1001377
ER  -