Columbia subject headings:
Equality--Germany (East)--Congresses.
Equality--Germany (East)--Statistics--Congresses.
Social classes--Germany (East)--Statistics--Congresses.
Social indicators--Germany (East)--Congresses.
Harvard subject headings:
Equality--Germany (East)--Congresses.
Social indicators--Germany (East)--Congresses.
Princeton subject headings:
Equality--Germany (East)--Statistics--Congresses.
Social classes--Germany (East)--Statistics--Congresses.
Social indicators--Germany (East)--Congresses.
Statistics.