TY - RPRT TI - Plasma corticosterone and thyroxine concentrations during chronic ingestion of crude oil in mallard ducks ( Anas platyrhynchos ) AU - Barnett A. Rattner AU - W. C. Eastin PY - 1981 DO - 10.1016/0306-4492(81)90002-2 UR - https://pubs.usgs.gov/publication/5222302 ID - 5222302 ER -