Columbia subject headings:
Harvard subject headings:
Germany (East)--Politics and government--Congresses.
Law--Germany (East)--Congresses.
Sozialistische Einheitspartei Deutschlands--Congresses.
Princeton subject headings:
Germany (East)--Politics and government--Congresses.
Law--Germany (East)--Congresses.
Sozialistische Einheitspartei Deutschlands--Congresses.