TY  - RPRT
TI  - Effects of dietary mercury and lead on eggshell thickness in mallards
AU  - M. A. Haegele
AU  - R. K. Tucker
AU  - R. H. Hudson
PY  - 1974
DO  - 10.1007/bf01685020
UR  - https://pubs.usgs.gov/publication/5221214
ID  - 5221214
ER  -