Bibliography
Author Plicka Karel Co-authors Poche Emanuel Issue data Praha : Nakladatelství Orbis, 1966 Edition Pragensia File Books Author Plicka Karel Co-authors Wirth Zdeněk Another authors Poche Emanuel Issue data Praha : Nakladatelství Panorama, 1978 Edition Pragensie File Books Author Plicka Karel Co-authors Poche Emanuel Issue data Praha : Nakladatelství Panorama, 1980 Edition Pragensie File Books Author Plicka Karel Co-authors Janáček Josef Issue data Praha : Nakladatelství Orbis, 1964 Edition Pragensie File Books