st15-4
Разные задачи по стереометрии.. Лекция 4 для учащихся Летней школы точных наук, Владикавказ, 2015.
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![[ДПС ГИБДД УМВД РОССИИ] Очередной беспредел ДПС! Часть 2 @TDG78 @Таташвили](https://sun9-12.userapi.com/impg/j_CmgbVh_8mCg9VQMfEvMhvEW5hxg6Tzp3bYrg/jgy_QTT7LkA.jpg?size=320x240&quality=95&keep_aspect_ratio=1&background=000000&sign=def08d703884ed48b3fb3bcb5ed4af30&c_uniq_tag=CDVH3jOkwVo2LixzCSL1Nm11PY82q5tgRsg0A5Gw2E8&type=video_thumb)
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