Title: Das Berliner Grenzgängerproblem
Subjects: Politics and government, Berlin Wall, Berlin, Germany, 1961-1989, Foreign relations, History, Berlin wall, berlin, germany, 1961-1989, Berlin (germany), history, 1945-1990, Berlin (germany), politics and government, 1945-1990, Germany (west), foreign relations, Germany (east), foreign relations
Places: Berlin (Germany), Germany (West), Germany (East)
Time periods: 1945-1990