1950
地下水道 Kanal 1957
1950
1980
1990
1990
1990
1970
1970
1950
1940
1990
1980
1950
1990
1990
1940
1990
2010
1980
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990
1990