Columbia subject headings:
Dichlorophenoxyacetic acid--Environmental aspects.
Dichlorophenoxyacetic acid--Toxicology.
Harvard subject headings:
Dichlorophenoxyacetic acid--Environmental aspects.
Dichlorophenoxyacetic acid--Toxicology.
Princeton subject headings:
Dichlorophenoxyacetic acid--Environmental aspects.
Dichlorophenoxyacetic acid--Toxicology.