Czech Geological Survey
 
Trade name: zvonivé inoceramové opuky
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Object: Hradiště
Architectural Element: Walls
Architectural Object: Castle
Address: Libice nad Cidlinou
District: Nymburk
Region: Středočeský
State: CZECH REPUBLIC
Way of Utilization Description: Opuka byla použita na slavníkovské hradiště na Libici.