TY  - RPRT
TI  - Organochlorine pesticides and polychlorinated biphenyls in black duck eggs from the United States and Canada--1971
AU  - J. R. Longcore
AU  - B.M. Mulhern
PY  - 1973
UR  - https://pubs.usgs.gov/publication/5221234
ID  - 5221234
ER  -