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