Columbia subject headings:
Harvard subject headings:
Drug abuse--United States--History
Drugs--Physiological effect
Drugs--Psychological aspects.
Hallucinogenic drugs
Princeton subject headings:
Drug abuse--United States--History.
Drugs of abuse.
Drugs--Physiological effect.
Drugs--Psychological aspects.
Encyclopedias.
Hallucinogenic drugs--Physiological effect.
Hallucinogenic drugs--Psychological aspects.
Hallucinogenic drugs.
Psychotropic drugs--Psychological aspects.
Psychotropic drugs.