Columbia subject headings:
Harvard subject headings:
Europe, Eastern--Foreign relations--Germany.
Europe, Eastern--Relations--Germany.
Germany--Foreign relations--Europe, Eastern.
Germany--Relations--Europe, Eastern.
Hahn, Hans-Henning.
Princeton subject headings:
Bohemia (Czech Republic)--Relations--Germany.
Europe, Eastern--Relations--Germany.
Germany--Relations--Czech Republic--Bohemia.
Germany--Relations--Europe, Eastern.
Germany--Relations--Poland.
Poland--Relations--Germany.