1950
地下水道 Kanal 1957
1950
1990
2000
1950
1940
2010
1980
1990
1980
1990
1940
1950
1990
1980
1990
1970
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