Профессор Почемушкин׃ серия 39 Почему обозначением неизвестного служит буква “Икс“
2 months ago 00:07:53 440
![[Профессор Почемушкин ТВ] NEW!!! В ЛЕСУ - Сборник познавательных мультфильмов Профессора Почемушкина о природе :)](https://sun9-26.userapi.com/impg/7PmsVeeqUubCoqR-3PT25dUDOsX2UZVTKcFpcQ/7sq4eMK9NhU.jpg?size=320x240&quality=95&keep_aspect_ratio=1&background=000000&sign=3a01f5d6404711f6362a6b555c75bb27&c_uniq_tag=cTCDPMFa2mgWNraOAUm5USL7IZCZk3r_DqgYM2R64ic&type=video_thumb)
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