Columbia subject headings:
Agent Orange--Political aspects.
Agent Orange--Toxicology.
Tetrachlorodibenzodioxin--Political aspects.
Tetrachlorodibenzodioxin--Toxicology.
Harvard subject headings:
Agent Orange--Political aspects.
Agent Orange--Toxicology
Tetrachlorodibenzodioxin--Political aspects.
Tetrachlorodibenzodioxin--Toxicology.
Princeton subject headings: