Columbia subject headings:
Harvard subject headings:
John Paul II, Pope, 1920-2005--Assassination attempt, 1981--Congresses.
National security--United States--Congresses
Terrorism--Congresses
Princeton subject headings:
John Paul II, Pope, 1920-2005--Assassination attempt, 1981--Congresses.
National security--United States--Congresses.
Terrorism--Congresses.