Columbia subject headings:
Harvard subject headings:
Disasters--Social aspects--United States.
September 11 Terrorist Attacks, 2001
September 11 Terrorist Attacks, 2001, in literature.
Terrorism--United States
United States--Foreign relations--1989-
Princeton subject headings:
Catastrophical, The.
Disasters--Social aspects.
September 11 Terrorist Attacks, 2001--Social aspects.