Columbia subject headings:
Germany (East)--Politics and government--Congresses.
Germany (East)--Research--Germany (West)--Congresses.
Parteitag der SED (10th : 1981 : Berlin, Germany)--Congresses.
Harvard subject headings:
Germany (East)--Politics and government--Congresses.
Germany (East)--Research--Congresses.
Germany (East)--Research--Germany (West)--Congresses.
Parteitag der SED (10th : 1980 : Berlin, Germany)--Congresses.
Sozialistische Einheitspartei Deutschlands. Parteitag (10th : 1981 : Berlin, Germany)--Congresses.
Princeton subject headings:
Communism--Germany (East)--Congresses.
Germany (East)--Politics and government--Congresses.
Sozialistische Einheitspartei Deutschlands.