Columbia subject headings:
Austria--Politics and government--1867-1918--Congresses.
Austria--Politics and government--20th century--Congresses.
Czech Republic--Politics and government--1993---Congresses.
Czechoslovakia--Politics and government--Congresses.
Hungary--Politics and government--20th century--Congresses.
Slovakia--Politics and government--1993---Congresses.
Harvard subject headings:
Austria--Politics and government--1867-1918--Congresses.
Austria--Politics and government--20th century--Congresses.
Czech Republic--Politics and government--1993---Congresses.
Czechoslovakia--Politics and government--20th century--Congresses.
Hungary--Politics and government--20th century--Congresses.
Slovakia--Politics and government--1993---Congresses.
Princeton subject headings:
Europe, Central--Politics and government--1989-
Europe, Eastern--Politics and government--1989-