1950
地下水道 Kanal 1957
1950
2020
1990
1990
1980
1990
2010
2010
1990
1970
1990
1950
1950
1990
1980
1980
1990
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