Distribution media
| Medium | Duration | Subtitles |
|---|---|---|
| 35 mm | 17 min |
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Film data
About a film
| Production year | 1981 |
|---|---|
| Countries | Czechoslovakia |
| Categories | film |
| Genres | pop-science |
| Form | documentary |
| Duration | 17 min |
| Director | Vladimír Bárta |
| Director of photography | Rostislav Zámečník |
| Screenplay | Vladimír Bárta |
| Editor | Antonín Štrojsa |
| Artist | Vladimír Bárta |