Columbia subject headings:
Harvard subject headings:
Bologna (Italy)--History--Bombardment, 1980--Anniversaries, etc.
Bologna (Italy)--Politics and government--1945-
Fascism--Italy--Bologna.
Memorials--Italy--Bologna.
Terrorism--Italy--Bologna.
Princeton subject headings:
Bologna (Italy)--History--Bombardment, 1980.
Bombing investigationz--Italy--Bologna.
Railroad stations--Italy--Bologna.
Terrorism--Italy--Bologna.