TY  - RPRT
TI  - Mallard egg quality: Enhancement by low levels of petroleum and chlorinated hydrocarbons
AU  - L.D. Vangilder
AU  - T.J. Peterle
PY  - 1983
DO  - 10.1007/bf01610092
UR  - https://pubs.usgs.gov/publication/5221808
ID  - 5221808
ER  -