Columbia subject headings:
Bin Laden, Osama, 1957-2011.
Qaida (Organization)
September 11 Terrorist Attacks, 2001.
Terrorism--Religious aspects--Islam.
War on Terrorism, 2001-2009.
Harvard subject headings:
Princeton subject headings:
Bin Laden, Osama, 1957-2011.
Terrorism--Religious aspects--Islam.
Terrorists.