Columbia subject headings:
Harvard subject headings:
Civil society--Europe, Central--Congresses.
Civil society--Europe, Eastern--Congresses.
Europe, Central--Politics and government--20th century--Congresses.
Europe, Eastern--Politics and government--20th century--Congresses.
Princeton subject headings:
Civil society--Europe, Central--Congresses.
Civil society--Europe, Eastern--Congresses.
Europe, Central--Politics and government--20th century--Congresses.
Europe, Eastern--Politics and government--20th century--Congresses.