1950
地下水道 Kanal 1957
1950
1980
1990
1980
1980
1960
1980
1930
2000
1970
1970
2010
1970
1930
1960
1990
1980
1960
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970
1970