Columbia subject headings:
Harvard subject headings:
Czechoslovakia--History--1945-1992--Pictorial works.
Czechoslovakia--History--1945-1992.
Dubček, Alexander, 1921-1992.
Heads of state--Czechoslovakia--Biography.
Princeton subject headings:
Czechoslovakia--History--1945-1992.
Czechoslovakia--History--Pictorial works.
Dubček, Alexander, 1921-1992.
Heads of state--Czechoslovakia--Biography.