Trade name: železnobrodská břidlice
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| Object: | Zámek |
| Architectural Element: | Roofing |
| Architectural Object: | Chateau |
| Address: | Sychrov - Čtveřín, zámek Sychrov |
| District: | Semily |
| Region: | Liberecký |
| State: | CZECH REPUBLIC |
| Way of Utilization Description: | Krytina střechy |
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| Photo: Barbora Dudíková Schulmannová (2011) |