1950
地下水道 Kanal 1957
1950
1980
1980
1980
1990
1980
2000
1930
1970
1990
1990
1970
1960
1980
1950
2020
1990
1990
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
1960
1960
1960
1960
1960
1960
1960
1960
1960
1960
1960
1960
1960
1960
1960
1960
1960
1960
1960