Organochlorine residues in three heron species as related to diet and age.
D000367:Age Factors; D000818:Animals; D003400:Astacoidea; D001717:Birds / Q000378:metabolism*; D004032:Diet; D005506:Food Contamination; D006843:Hydrocarbons, Chlorinated; D007306:Insecticides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*
D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D010573:Pesticide Residues