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