Columbia subject headings:
Harvard subject headings:
Europe, Central--Anniversaries, etc.
Europe, Central--Ethnic relations.
Europe, Eastern--Anniversaries, etc.
Holidays--Europe, Central--History.
Memorials--Political aspects--Europe, Central.
Memorials--Political aspects--Europe, Eastern.
Special days--Europe, Central--History.
Princeton subject headings:
Europe, Central--Anniversaries, etc.
Europe, Eastern--Anniversaries, etc.
Memorials--Political aspects--Europe, Central.
Memorials--Political aspects--Europe, Eastern.