TY  - RPRT
TI  - Changes in mineral composition of eggshells from black ducks and mallards fed DDE in the diet
AU  - J. R. Longcore
AU  - F. B. Samson
AU  - J.F. Kreitzer
AU  - J. W. Spann
PY  - 1971
DO  - 10.1007/bf01540002
UR  - https://pubs.usgs.gov/publication/5221238
ID  - 5221238
ER  -