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Cast
Jan Tříska
Jan Svozil
Oldřich Vykypěl
ROH chairman
Zdeněk Maryška
Assistant (uncredited)
Jana Hlaváčková
Vlasta Martínková
Gabriela Wilhelmová
Hana
Vilém Pfeiffer
Bartoněk (uncredited)
Zdena Herfortová
Eva Svozilová
Milan Pásek
Institute director (uncredited)
Miroslav Donutil
Assistant (uncredited)
Jana Gazdíková
Secretary (uncredited)