Hey, Mister, Let’s Play! How They Went to Sleep (1968)
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- Release Date: 1968-09-13
- Runtime: 0h 13min
- Production Company: Krátký film Praha – Studio kresleného a loutkového filmu Praha
- Production Country: Czechoslovakia
- Directors: Břetislav Pojar, Miroslav Štěpánek.
- Writers: Břetislav Pojar, Ivan Urban.
