@book{UBHD-1089946, author={Eschborn, Michael}, title={Karlstein}, subtitle={das R{\"a}tsel um die Burg Karls IV.}, publisher={Verlag Urachhaus}, address={Stuttgart}, year={1971}, pages={210 S.}, language={ger}, isbn={3-87838-146-8 and 978-3-87838-146-4}, keywords={Karlstein <Beroun>}, library={UB [Signatur: 72 B 4110] ; KU [Signatur: xCS 6220/11]}, }