1. Kolem jubilea akademika O. Chlupa Creator: Jan Patočka Publisher: Pedagogika 6 (1956), č. 1, str. 116–119. Misc. Type: Text Subject: 1956, 2006/11, cs, and SS-12/Češi-I Language: Czech Rights: open access and Rights holder: Archiv Jana Patočky, z.s.