Columbia subject headings:
Executions and executioners--Europe--History.
Head--Mythology.
Head--Religious aspects--History.
Headhunters--Europe--History.
Harvard subject headings:
Atrocities--History.
Beheading--History.
Capital punishment--History
Princeton subject headings:
Executions and executioners--Europe--History.
Head--Mythology.
Head--Religious aspects--History.
Headhunters--Europe--History.