Columbia subject headings:
Harvard subject headings:
Europe, Eastern--Economic policy--Congresses.
Europe, Eastern--Social conditions--Congresses.
Europe, Eastern--Social policy--Congresses.
Social change--Europe, Eastern--Congresses
Social service--Europe, Eastern--Congresses.
Princeton subject headings:
Europe, Eastern--Economic policy.
Europe, Eastern--Social conditions.
Europe, Eastern--Social policy.
Social change--Europe, Eastern.