No backdrop availableNo posterHypotézy1963DocumentaryJanuary 1, 1963 · CzechoslovakiaSave to watchlistMark as seenShareDetailsStatusReleasedRelease dateJanuary 1, 1963Original languageCzechSpoken languagesCzechCountriesCzechoslovakiaProductionStudio populárně vědeckých a naučných filmů PrahaBudgetNot recordedRevenueNot recorded