Columbia subject headings:
Harvard subject headings:
Chemical mutagenesis--Congresses.
Environmental toxicology--Congresses.
Genetic toxicology--Congresses.
Pesticides--Toxicology--Congresses
Veterinary toxicology--Congresses.
Princeton subject headings:
Chemical mutagenesis--Congresses.
Environmental toxicology--Congresses.
Pesticides--Toxicology--Congresses.
Veterinary toxicology--Congresses.