The Mystery of the Third Planet (1981)
The Mystery of the Third Planet (, Tayna tretyey planety), aka The Secret of the Third Planet is a 1981 Soviet traditionally-animated feature film directed by Roman Kachanov and produced by the Soyuzmultfilm studio in Moscow. It is based on a children's science fiction novella "Alice's Travel" by Kir Bulychov, from Alisa (Alice) Selezneva book series.
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