TY  - RPRT
TI  - Reproduction in mallards fed selenium
AU  - G. H. Heinz
AU  - D. J. Hoffman
AU  - A. J. Krynitsky
AU  - D.M.G. Weller
PY  - 1987
DO  - 10.1002/etc.5620060603
UR  - https://pubs.usgs.gov/publication/5222190
ID  - 5222190
ER  -