1950
地下水道 Kanal 1957
1950
1930
1990
1990
1990
1960
1990
1970
1940
2000
1990
1990
1990
2000
1990
1960
2020
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
1990