No backdrop availableNo posterLéto1957DocumentaryJanuary 1, 1957 · CzechoslovakiaSave to watchlistMark as seenShareDetailsStatusReleasedRelease dateJanuary 1, 1957Original languageCzechSpoken languagesCzechCountriesCzechoslovakiaProductionStudio populárně vědeckých a naučných filmů PrahaBudgetNot recordedRevenueNot recorded