1950
地下水道 Kanal 1957
1950
2020
1990
2000
1980
2000
1990
1940
2010
1990
2000
1960
1990
2010
1980
1970
1990
1960
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