{"id":"001002117","type":"book","title":"Radiolarite mining pits in Bolešov, Vlara pass","publisher-place":"Warszawa","pages":"57-61","container-title":"Man and flint. Proceedings of the 7th International Flint Symposium, Warszawa-Ostrowiec Świętokrzyski, september 1995","author":[{"family":"Chebeň","given":"Ivan"}],"issued":{"raw":"1997"}}