TY  - RPRT
TI  - Weathered petroleum: Effects on mallard egg hatchability
AU  - Robert C. Szaro
AU  - Nancy C. Coon
AU  - William C. Stout
PY  - 1980
DO  - 10.2307/3808025
UR  - https://pubs.usgs.gov/publication/5221554
ID  - 5221554
ER  -