TY  - RPRT
TI  - Eggshell breakage by incubating black ducks fed DDE
AU  - J. R. Longcore
AU  - F. B. Samson
PY  - 1973
DO  - 10.2307/3800130
UR  - https://pubs.usgs.gov/publication/5221224
ID  - 5221224
ER  -