Columbia subject headings:
Harvard subject headings:
Hallucinations and illusions.
Impostors and imposture.
Occultism
Occultism--Early works to 1900
Social psychology.
Swindlers and swindling.
Princeton subject headings:
Common fallacies.
Hallucinations and illusions.
Impostors and imposture.
Occultism.
Social psychology.
Swindlers and swindling.