Columbia subject headings:
Ukraine--Politics and government--1945-1991--Congresses.
Ukraine--Politics and government--1991---Congresses.
Harvard subject headings:
Ukraine--Politics and government--1945-1991--Congresses.
Ukraine--Politics and government--1991---Congresses.
Princeton subject headings:
Ukraine--Politics and government--1991---Congresses.
Ukraine--Social conditions--1991---Congresses.