Columbia subject headings:
Germany (East)--Historiography.
Germany (East)--History.
Sozialistische Einheitspartei Deutschlands--History.
Harvard subject headings:
Germany (East)--Historiography.
Germany (East)--History.
Sozialistische Einheitspartei Deutschlands--History.
Princeton subject headings:
Germany (East)--Historiography.
Germany (East)--History.
Sozialdemokratische Einheitspartei Deutschlands--History.