1 гимназия Аллея сказок
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![[Онлайн Гимназия #1] 10 класс - Химия - Альдегиды и кетоны. Состав, строение, свойства. Применение и получение](https://sun6-22.userapi.com/impg/nLNLPsf9QBoDI_mRC6feiJ-OJwFJpMfiSo8jxw/JV2Yg1CcHLs.jpg?size=320x240&quality=95&keep_aspect_ratio=1&background=000000&sign=d7cd4f7f47f67dcad7554197311fdf83&c_uniq_tag=1av5bWRiFa574DX9iKnEgY-IRWarncGYF1FhRt4BCu4&type=video_thumb)
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