Columbia subject headings:
Toluene--Environmental aspects.
Toluene--Physiological effect.
Toluene--Toxicology.
Harvard subject headings:
Toluene--Environmental aspects.
Toluene--Physiological effect.
Toluene--Toxicology.
Princeton subject headings:
Benzene--Toxicology.
Toluene--Toxicology.
Toluene.